Cracks in walls above windows are a problem experienced by many householders after having new windows installed. The old frame, which may have fortuitously doubled as a lintel, is removed to facilitate the double glazing. The brickwork then settles onto the lightweight frame as it sags and cracks. The Brick Arch Repair Kit provides everything required to reinforce weakened brick arches, lintels and soldier courses.
These masonry crack repairs need to be strong and durable. The brick reinforcement comprises four 3.5m helical bars formed from high-tensile 304-grade stainless steel which are bedded into walls. The bar and grout combination works with the adjacent brick courses, forming a reinforced brick beam lintel that supports and redistributes loads. In walls up to 230mm thick the deep masonry beams can carry a factored load of 2.6 tonnes over openings up to 2.5m wide. Two bars are inserted into a pre-cut slot, forming the bottom chord of the reinforced beam, a second pair of bars forming the top chord. Between these bars, the masonry forms the web of the beam.
The brick headers are securely pinned to the newly-created reinforced brick lintel with retrofit brick ties. Six 305mm-long helical wall ties are supplied in the Twistfix Brick Arch Repair Kit along with an essential wall tie setting tool. These patented self-tapping ties, driven through undersized pilot-holes, effectively securing brick arches and soldier courses to the reinforced masonry panels above them.
This comprehensive kit is incredibly popular due to its versatility. It can be used to repair and reinforce sagging lintels and cracked walls or can be used as a preventative measure to strengthen the brickwork prioir to window replacemeent. Supplied with the helical bars and remedial brick ties is a large tub of WHO 60 masonry repair grout, a Grout-Master applicator with innovative Hi-Flo nozzle, a Helix mixer paddle and a finger trowel. A specification sheet, quick guide and vital BRE load tables for masonry beam reinforcement are available on the Twistfix website and we recommend examining these documents thoroughly prior to using the kit to repair cracks in the wall.
To complete the structural repairs to a professional standard the cracks should be filled to seal against water penetration and the damp which that may cause. Why not take a look at our extensive range of brick-coloured crack injection solutions.
If you require further information or advice on any aspect of masonry reinforcement, crack repair, crack stitching or remedial wall ties, please browse our detailed online guides or contact a member of our experienced and professional team.
The summer sunshine is especially beautiful and particularly around the hours of sunrise and sunset, creates long and dramatic shadows that are often attractive to photographers due to their singular appearance. These shadows can also be quite revealing…
The winter created many new potholes on roads, driveways and other such surfaces which seem to show up horribly now that the sun's changing position in the sky. As the warm weather tempts us outside more, we are driving extra miles, taking caravan holidays and generally enjoying the outdoors again after a long bout of cold weather.
These combining factors make potholes ever more noticeable and it’s the ideal time to get them fixed up; Twistfix provide the solution in the form of our Pothole Repair Kit, which is designed to suit a wide and diverse array of surfaces from public roads and pavements to driveways, patios, sports courts, car parks, paths and more.
Potholes begin due to fatigue of the surface caused by ordinary use. Tiny hairline fractures develop, gradually widening as the edges work loose and and picked out. Water is the worst enemy because once it gains access to the cracks it readily fills them, beginning the process of erosion. Such tiny amounts of water freeze easily, which widens the crack slightly and permits more water to enter.
This is the dreaded freeze and thaw cycle. It is extremely damaging and is the reason that so many potholes form in winter and early spring. They will continue to get worse without attention and can pose a health and safety risk as well as becoming an eyesore, particularly on sunny days.
Potholes are responsible for many accidents, especially among cyclists and pedestrians; of this latter category, it is young children, the elderly and those with mobility problems who are most at risk.
Providing an instant lasting repair to tarmac and asphalt surfaces, Twistfix Permanent Pothole Repair is of highway-quality and guarantees the most professional result. Bought as part of a comprehensive kit, the formula prevents further cracking and water ingress to ensure that the freeze thaw cycle won't start up again.
Find out just how competitive our prices are on this product!
As we welcome back warmer, drier weather (at least that’s what we all hope!), it is important to remember that we aren’t the only ones - early spring is the time when Japanese knotweed started its invasive growth cycle and so now many people are just starting to realise the chain of events that has been set in motion The weed causes an array of problems if it’s growing on your property so check out our guide to identifying it and then make sure to chose a contractor who uses products you can trust..
From Japan to the UK
The intrepid explorer Philipp von Siebold was the first European to come into contact with knotweed and was very much taken with the way it appeared to resemble bamboo. He took specimens back to his native Holland, from where some was brought to London for exhibiting at Kew Botanical Gardens. Little did anyone know the destructive chain of events that they were setting in motion.
How to Spot Japanese Knotweed
The plant is now on the list of the world’s most invasive plant species, as compiled by the World Conservation Union. Knowingly allowing it to grow on your property or spreading any plant material is against the law and surveyors now regularly check new properties for signs of the issue - many mortgage applications have been thus refused. You can spot Japanese knotweed by its:
Hollow stems, which feature a distinctive pattern of raised bumps similar to bamboo
Excessive height of up to 4m in extreme cases
Small, cream or off-white flowers
A Professional Solution
As it is so aggressive, invasive and hardy, Japanese knotweed requires professional removal by a specialist, qualified team and they need to be using reliable materials. Use our find-a-contractor service and say sayonara to Japanese knotweed.!
Maximising the thermal efficiency of a building is essential and installing warm roofing is a great way to achieve it. Roofing work is high on the list of priorities at the moment so make sure you have everything you need to meet demand including Thor Helical Super-7 Warm Roof Batten Fixings. If you haven’t heard of them before, then here is our essential point-to-point guide…
Complete your kit by ordering Thor Helical Super-7 Warm Roof Nails. As with all Twistfix products, you are guaranteed the most competitive price teamed with our impeccable customer service.
- Expert engineering has led to Super-7 fixings taking over from traditional inskew fixings
- With a cross-section 20% larger than traditional fixings, Super-7s have a dramatically increased ability to resist bending forces; these have increased due to the popularity of thicker insulation material.
- The original Helifix inskew was created more than 30 years ago and Super-7 fixings were invented by the same designer
- Installing the fixings requires the use of an installation alignment jig. This patented technology makes sure that nailing is easy, safe, accurate and effective, without regard to the thickness of the insulation material
- The components work seamlessly with all types of insulation material
- Security and strength is guaranteed as the fixings are held deep within both the counter-batten and rafter
- Thor Helical fixings ensure a tight seal between panels; this is essential to ensure that the benefits of the insulation are felt, both environmentally and financially
- The increased performance means that less fixings can be used to achieve a professional result, saving precious time and money
- Safety is guaranteed; the fixings meet all NHBC technical requirements and adhere closely to BS and Eurocode standards
Over-rafter warm roof fixing systems need to withstand wind loads, a function of location and exposure, and resist sliding loads, a function of tile weight, roof pitch and the gap between rafter and counter-batten. Use our BRE approved calculator to find out how many Super-7 warm roof nails are needed for your project.
Since its introduction to the Twistfix product portfolio, the Damp Check Mesh Membrane Kit has been a staple of the professional waterproofers array of solutions. It’s instant and lasting popularity comes down to just two factors: pure product quality and consistently competitive pricing from Twistfix.
Not discovered the kit yet? Prepare for a revolution in your working practice…
After a remedial damp proof course has been installed, there is a risk of damage to internal finishes from salts and water vapour that are drying out of the walls. This is a particular problem when the area is intended for living purposes and so using a membrane is recommended to help avoid the issue.
Mesh Membrane from our comprehensive kit immediately creates an effective moisture barrier, and one which is plenty durable too. As soon as the DPC is installed and the membrane follows, reinstatement of wall plaster can begin: no more waiting around for weeks and spoiling your efficiency.
Everyone loves a nice hot shower and lots of people are opting for the luxury of a full wet room; it’s just like a shower except it’s the whole room! Mesh membrane is perfect to accompany this process. The product features a mesh face which will readily accept a wide range of tile adhesives, cement renders or plasterboard dabs; the reverse side is fitted with stand-off studs separated by air gaps, letting the wall breathe naturally and keeping liquid away from it behind the membrane.
The mesh membrane kit is your best option to make sure that you’ll have everything you need to carry out the most professional and 100% successful installation. It contains 10m of membrane along with a matching 10m of butyl rubber waterproofing tape and 100 quality hammer-in fixing plugs. Open the box and you're ready to start; no special tools are needed to modify the membrane and ordinary scissors/knife can be used to cut it to size.
Don’t risk failure by using inferior materials. Trust Twistfix to deliver the best every time and preserve your reputation.
When mineral-based building materials get wet, a certain amount of water is absorbed into them. This absorbed water is one of the leading causes of structural problems such as damp, frost damage, cracking and moss growth. Twistfix offer a range of products designed to safeguard against this form of damage, including Damp-Seal water repellent cream.
The Masonry Protection Cream has many advantages, which include:
- Massive reduction (over 80%) of water uptake
- Water-vapour permeability is retained at a high level
- Durability – with excellent penetration power and exceptional resistance to UV light
- Strong resistance to alkalis
- Easy application with roller, spray or brush
- Reduced chance of spalling and staining
- Strong adhesion to overhead or vertical surfaces
- Four times the efficiency of liquid water repellent
Masonry that has become damp is an ideal environment for the growth of moss, algae and lichens. Twistfix moss removal biocide provides a powerful and professional solution to the problem – just follow these simple steps.
- First, make sure you are wearing eye & breathing protection, overalls and rubber gloves
- Using a brush, remove as much surface moss as possible
- Dilute the concentrated product with water in a suitable container to make 25 litres of ready-to-use biocide
- Using a low-pressure spray, apply the product to patios, driveways, roof tiles or other masonry
- Enjoy the clean, clear and long-lasting results!
Click here to find out more... Don’t let moss be the boss or damp be the champ – fight back with Twistfix! And, if you have any questions, don't forget that you can have them answered live, instantly and expertly with our chat function.
Penetrating damp is a term that broadly describes intruding moisture from an outside source that has breached a property. The ‘outside source; should be coming from a number of places and could require the services of an expert if the source is not immediately apparent.
Spotting Penetrating Damp
Patches of wall may become moist as the problem takes hold, leading to discolouration and damage to decorated surfaces. It will become immediately important to identify and rectify the incoming water issue at its sources it could be a leak in a pipe or even water that has permeated through structural barriers.
Identifying the Source
The most important and obvious problem is to halt the water ingress through this often proves to be the difficult part. Building envelopes develop leaks and there are many ways for water to find its way in, from defective door and window joints, leaking gutters, faulty or damaged flashings and, the invisible cause, missing roof tiles. Rainwater can reveal weaknesses, particularly in prolonged and heavy showery periods.
Masonry walls absorb water naturally and can do so without hassle under normal circumstances. It the walls are subject to constant or near constant rain water attack, particular from driving rain or the saturating effect of a leaking downpipe, the absorbed moisture can saturate brick or block to its limit, the excess appearing as penetrating damp.
Bricks in particular paos a problem as their fine capillaries mean that water is transported around the internal structure at a rate tenfold that of other materials. Hairline cracks are common as water takes its erosive path at the mercy of gravity.
Solid walls are more likely to be affected than cavity wall construction by this type of penetrating damp. This is not to say that the cavity wall is a perfect solution as they can become blocked, which has the reverse effect of allowing water to bridge the gap. Cavity walls retrofitted with insulation foam also have a tendency to allow water percolation.
Treating the Issue : Simple Steps
Immediately, locate the source of the water intrusion. If you can't get someone to help you; your landlord or local council might be a good bet. Knowing where your water stopcock is will help ease panic in emergencies, too.
Once stopped, it is simply a matter of keeping up good regular building maintenance by carrying out such tasks as checking roof coverings and flashing for water tightness, keeping gutters clear of any obstructions and making sure they are leak free, checking windows and door frames for potential gaps.
Safeguarding masonry requires keeping wall cavities if they exist, clear of obstructions and checking regularly. ANy eroded or defective mortar joints should be immediately repointed and any cracks and crevices kept filled. Finish with Twistfix high strength masonry water repellent for a lasting result; it;’s 100% vapour permeable lines rather than blocks masonry pores, allowing evaporation and preventing a damaging freeze/thaw cycle from beginning.
Any construction or renovation project requires the same basic three things to have a chance at success – careful planning, quality materials and knowledgeable users of these materials. When attempting renovation work on an older building, the same things apply except you have to really up the careful factor to maximum! Luckily, the experts at SRS (Midlands) know their stuff inside out and, using products supplied by Twistfix, recently carried out a complete, large-scale overhaul of an historic church.
Many contractors will happily say ‘no job is too small’ but the staff at SRS (Midlands) are equally used to saying ‘no job is too big!’. Lesser men would have baulked at the mammoth task but for Senior Projects Manager Mike Cooper and his dedicated, cherry-picked team, it presented an exciting, unique and absorbing challenge, to which they rose admirably. The benefit of many years of practical experience combined with their implicit trust and confidence in the quality of Twistfix products meant they knew they could get the job done, and get it done right.
Cambridge Road Methodist Church in Kings Heath, Birmingham, was completed back in 1903 and, in the intervening years between then and today, had understandably lots some of its former glory. The work list was extensive and included:
- A full overhaul and upgrade of the structure inside and out
- Restoring the stability of the structure, particularly the turrets and spire base, which had suffered from extensive movement and resettlement
- Stabilising several masonry separations using Twistfix helical bars wrapped around the tower , like hoops around a barrel. Crack stitching products were then installed to reconnect cracked brick panels
- Intricate securement of all side turrets, roundels and terracotta arches using Twistfix retro-fitted wall ties. Working with the terracotta required extreme delicacy and so ended up being the most time—consuming part of the two-month project — main engineers Worrall & Associates instructed SRS (Midlands) contractors to remove all of the old terracotta mortars to the miniature spires on the turret tops, before grouting them using a resin mortar before a full repointing scheme, which fully concealled the structural masonry repairs.
Main contract Trendgrey Ltd were extremely satisfied with the results and the grand church is once again restored to its previous magnificence, thanks to the dedicated work of Twistfix-registered contractor SRS (Midlands) and the consistent professional quality of our masonry repair products, systems and solutions.
Find out more about the range of masonry repair products available NOW from Twistfix at the most competitive price.
A long, particularly cold winter that has extended well into the spring has left many roads, driveways and footpaths riddled with potholes which, unless attended to, will continue to get worse and possibly present a safety risk. The professional solution comes in the form of the Ultra Crete Asphalt Repair Kit, available from Twistfix now at a very special price...
The Ultra Crete Asphalt Repair Kit is the choice of professionals all over the country, from private contractors to large industries, councils and local authorities. Efficient, safe and reliable, the kit contains everything required for a lasting repair and comes with the usual Twistfix guarantees of effectiveness.
Potholes are unavoidable; the surface fatigue experienced during general usage causes vibrations which lead to tiny hairline fractures. The edges of these begin to work loose and water gets inside which, when it freezes, expands and widens the crack. This lets more water in and the freeze-thaw cycle is set in motion, progressively widening the cracks until the surface material begins to come apart.
Potholes can be dangerous to pedestrians who can easily trip on the unlevel surface, particularly if the light is low. They are also an impediment to driving. Damage to cars is often experienced as loose stones from the pothole are dislodged, an issue that also makes the pothole even larger. Repairing them immediately they are noticed is clearly essential and there is no better way to do it than with Ultra Crete.
The kit contains a cold-lay asphalt and delivers swift, lasting repair to a number of surfaces, including driveways, courtyards, roads, car parks, footpaths, patios and sports courts. It can be used in any weather condition with equal effectiveness and the permanent repair helps to prevent damage occurring again.
You can now save a cool £45 when you buy the Ultra Crete Asphalt Repair Kit from Twistfix. For just £141.48 fully inclusive of VAT, you receive three 25kg tubs (resealable and recyclable) of cold lay asphalt plus 750ml of bitumen cold joint sealer to guard against the dreaded freeze-thaw cycle.
This is a limited-time offer so stock up now and start filling in those potholes!
Cracks in brickwork are an extremely common structural issue and the effects can become serious if the cracks are not immediately attended to. Getting the job done doesn’t have to be a stressful or difficult process: just follow the simple Twistfix guide and you’ll be repairing cracks like a pro before you know it!
The main issue with cracked brickwork is that the cracks provide the perfect route for wind-driven rainfall to penetrate masonry walls. When the weather is cold, water within the openings freezes and, as water expands by around 10% in volume when it turns into ice, the cracks are widened by the resulting pressure. The tiniest hairline cracks can thus become much larger very quickly, allowing more water to penetrate each time. More water means more expansion and the freeze-thaw cycle is set in motion, progressively worsening the issue and causing more damage to the bricks.
An effective filler, properly utilised, will get rid of any fissures and crevices that may have developed. When filling cracks in mortar joints, the process involves mechanically widening the cracks in order to allow for repointing of the wall at a sufficient depth using new mortars.
Cracks in brickwork require a purpose-made injection system to make sure that they are filled to an adequate depth.
PREPARE the cracks by using a vacuum or air-line. This is essential to remove loose or friable particles as the substrate must be free from dust, dirt and other contaminants if a long-lasting, successful repair is to be achieved.
MIX the injection mortar in strict accordance with the manufacturer’s instructions. Be aware that mixing adhesives causes an exothermic chemical reaction and the generated heat can limit workability of the product, meaning it has to be applied within a short time of being prepared. Users should therefore have everything they are going to need ready before this stage.
TRANSFER the injection mortar to a caulking cartridge that is fitted with a nozzle suited to the width of the crack to be filled. Nozzles are available that can inject resin into cracks a single millimetre wide.
INJECT the crack sealant as deep as possible, ensuring that the opening is completely filled from base to surface.
MATCH the colour of the repair to the substrate while the sealer is still tacky, using tinting agents or brick dust.