Basement Water­pro­ofing Products

Waterproofing membrane

Water­pro­ofing membrane

Basement water­pro­ofi­ng membrane for tanking cellar walls and floors surfaces. Ideal for basement or cellar conversions.
Membrane Fixing Plugs

Membrane Fixing Plugs

Membrane fixings are an important part of cavity drain membrane systems. They create the waterproof plug that prevents ingress at vulnerable fixing positions.


The process of damp proofing a basement or cellar is often referred to as Basement Tanking.
Waterproofing Tape

Water­pro­ofing Tape

Water­pro­ofi­ng Tapes for all kind of purposes from Twistfix. We supply only high quality wa­ter­pro­ofing tapes.
1–12 of 33 items

Membrane Plugs

Hammer-in fixing with waterproof seal for use with Baseline 8 & Thermseal wa­ter­pro­ofi­ng membranes. Screw wall studs directly into aperture located in plug head. Quantity: 100/ 200
  • RRP £58.80
  • £41.88
  • £34.90
Rating 4.6 of 5

No More Damp Tanking Slurry.

No More Damp Tanking slurry is a cementitious waterproof system designed to form a permanent waterproof coating to concrete and masonry. 12.5 and 25kg.
  • RRP £39.60
  • £27.00
  • £22.50

Wall Waterproof Membrane – Baseline 8

Waterproof membrane for tanking walls and floors. Cavity drain membranes in 40m2 & 48m2 rolls for basement wa­ter­pro­ofi­ng. Leaves surfaces ready for dry wall lining or floor laying.
  • RRP £238.80
  • £171.00
  • £142.50
Rating 5.0 of 5

Water­pro­ofing Tape

A high quality water­pro­ofi­ng tape that is applied to the lap joints of abutting cavity-drain membranes. This flexible butyl rubber tape forms a water-tight joint seal. 22.5m x 28mm
  • RRP £47.70
  • £27.48
  • £22.90

Mesh Membrane Plugs

Hammer-in fixing with waterproof seal for use with air gap mesh membranes. Roughened head provides a key for plaster finishes. Bag quantity: 200
  • RRP £61.44
  • £47.64
  • £39.70

Waterproof Membrane – Baseline 8 Kit

Water­pro­ofi­ng membrane kit with everything needed for water­pro­ofi­ng 40m2 or 48m2 of floor or wall. Fix studs to basement membrane plugs for dry-lining walls. Lay screed direct.
  • RRP £404.10
  • £270.00
  • £225.00

Plaster Membrane - Baseline Mesh

Basement waterpro­ofi­ng membrane for tanking walls. Mesh membranes have a tough HDPE mesh surface for direct application of wall plaster or adhesive dabs for plas­ter­board. 20m2 or 40m2 roll
  • RRP £217.20
  • £163.20
  • £136.00

Plaster Plugs

Hammer-in fixing for use with Baseline Mesh waterpro­ofi­ng membrane. Keyed surface to receive direct application of wall plaster or plasterboard on adhesive dabs. - Box Quantity: 250
  • RRP £37.44
  • £25.68
  • £21.40

Waterproof Corner Tape

A wide flexible membrane tape for sealing and water­pro­ofi­ng the wall-floor junction of cavity drain membrane systems. This 150mm wide wa­ter­pro­ofing tape is available in 20m rolls
  • RRP £99.60
  • £52.44
  • £43.70
Rating 5.0 of 5

Baseline Mesh Membrane Kit

Mesh membrane kit in 3 sizes with everything needed for waterpro­ofi­ng wall surfaces. These waterproof tanking membranes include a mesh face for direct application of plaster or dabs for plas­ter­board.
  • RRP £346.80
  • £245.58
  • £204.65
Rating 5.0 of 5

Overseal Tape

A single sided overseal tape used to seal over the top of lapping membranes. It serves as a vapour barrier and a waterproof seal on externally taped joints 22.5m x 75mm
  • RRP £73.44
  • £61.80
  • £51.50

Wall Insulation Anchors - Mechanical

Mechanical insulation anchor with plastic plug and glass filled nylon drive pin for fixing Kingspan & Celotex wall insulation. Use with load spreading washer for fixing mineral wool. Sizes: 70 - 180mm Long. Box Qty: 250
  • RRP £40.20
  • £30.00
  • £25.00
Rating 4.8 of 5

Basement water­pro­ofi­ng products?

The call for converting basements continues to grow in popularity as homeowners seek a cost-effective and reliable method of creating extra living space within the home. Basement wa­ter­pro­ofi­ng plays an essential part of any cellar conversion project as it is the key factor in eliminating all possibility of water ingress in order to protect the basement and maintain a dry, warm and healthy area. 

Being underground, a basement is more susceptible to the possibility of unwanted water ingress. The type of basement system to use is therefore an important con­si­dera­ti­on as a variety of methods are available.

basement waterproofing productsCement tanking slurry are one option for a basement tanking solution; it works by blocking water from entering a building under hydrostatic pressure. It is is vital the walls are prepared thoroughly before applying two coats the slurry onto the masonry. Once the final coating has hardened, a coat of plaster is applied to protect the tanking layer from damage in service.

One of the most effective and commonly used system is the instal­la­ti­on of water­pro­ofing membrane on the walls and floors of the cellar. This cavity drain membrane effectively seals the area and, behind the scenes,­ manages the flow of water to an exit drain; providing consistent protection against the damaging consequences of unwanted water entering the home.

Twistfix damp proof membrane and basement waterpro­ofing products are manufactured to the highest standard and we also provide all of the accessories required such as water­pro­ofing tape and mesh membrane fixing plugs.

Twistfix tanking slurry and floor junction fillet seal carry the same guarantee of quality as our entire range of products and we are the first choice for thousands of customers seeking reliable, cost-effective basement wa­ter­pro­ofi­ng products.­ 

An effective basement water­pro­ofi­ng system is vital for the longevity of a cellar conversion.­  It eliminates the need for other damp treatment protects against moulds and allows the converted space area to be enjoyed for many years.