Construction Chemicals

Mould Remover

Mould Remover

Buy mould remover biocide for the removal of black mould on walls. Stop damp mould with a mould remover kit at trade prices.


The process of plastering walls has been used in building construction and renovation for hundreds of years.
Surface Treatment

Surface Treatment

Surface treatment products are designed to repair and protect construction materials such as brick, stone, concrete, tarmac and slate.
Wood Preservative

Wood Preservative

Buy timber treatment and preservative for treating wood. Twistfix offers effective wood preserver products for preserving timber at trade prices.
1–12 of 24 items

Masonry Water Repellent Cream

Dry Seal masonry water repellent is a high strength silane cream treatment that waterproofs brick and stone facades including walls, bridges and tunnels. 3kg Tub
  • RRP €127.09
  • €98.41
  • €82.01
Rating 4.8 of 5

Rendering Additive

A waterproof rendering additive for use in sand and cement render mixes when renewing wall plaster following insertion of a new damp proof course. sufficient admixture for 150 square metres of render at 12mm thick 25kG
  • RRP €114.70
  • €95.58
  • €79.65

Renovating Plaster

A lightweight renovating plaster pre-mix with perlite aggregate & water repellent additives. For use following damp proof treatments or in conjunction with cementitious tanking coatings. 25kG
  • RRP €33.91
  • €27.96
  • €23.30

Woodworm Treatment Kit

This woodworm treatment kit comes complete with mixing vessel and spray unit. It eradicates wood boring beetle and protects against future infestation. 5 x 1L Concentrate makes 125L.
  • RRP €300.90
  • €247.09
  • €205.91

Asphalt Repair Kit

Asphalt Repair Kit is a versatile cold lay macadam. Solvent-free Ultracrete delivers instant repairs to tarmac roads, driveway surfaces and paths having pothole damage. 3 x 25kg macadam in resealable & recyclable tubs
  • RRP €220.90
  • €166.94
  • €139.12
Rating 4.8 of 5

Concrete Sealer - Microsealer

Concrete Sealer Micro is a highly penetrative liquid treatment that forms durable monolithic structures in concrete to improve surface wear & water repellency. 25L
  • RRP €102.66
  • €105.26
  • €87.72

Floor Junction Fillet Seal

A cement based waterproof fillet seal for treatment of concrete floor / masonry wall junctions and other surface points of stress. Essential for effective tanking treatments. 25kg
  • RRP €84.11
  • €70.09
  • €58.41

Wood Preserver – Wykabor 20 Gel

A boron-based gel for treatment against wood-boring insects and timber decay in high risk timbers such as joist ends, purlins, wall plates etc. 5L
  • RRP €93.46
  • €70.09
  • €58.41

Woodworm Killer

Ready to use woodworm killer that eradicates active infestation of wood boring insects at all life-cycle stages including woodworm and prevents further infestation. 5L
  • RRP €25.49
  • €23.36
  • €19.47

Wet & Dry Rot Treatment

This wet & dry rot treatment kit comes complete with mixing vessel and spray unit. It protects timber against wood-rooting fungi and kills woodworm. 6 x 1L Concentrate makes 75-150L depending on application
  • RRP €470.82
  • €358.88
  • €299.07

Drywall Insulation Fixing Stainless

Drywall fixings for fixing plasterboard insulation sheets to walls. A stainless steel fiastener with a countersink head. Designed to anchor thermal insulation laminates to walls 20 Pack or 400 Box
  • RRP €18.70
  • €14.51
  • €12.09
Rating 5.0 of 5

Lignum Woodworm Treatment

A professional woodworm treatment concentrate that eradicates wood boring insect attack and safeguards timbers against future woodworm infestation. 1 Litre (Makes 25L of timber preser­vative)
  • RRP €42.48
  • €35.33
  • €29.44

Twistfix supplies a wide range of construction chemicals for building renovation. Professional admixture systems and plastering blends are ideal for finishing walls after damp proofing work has been carried out, whilst mould removal products get rid of black mould caused by conden­sation.

Professional wood preser­vative formu­lations are tailor-made for treating timber in old buildings, delivering long lasting protection from woodworm, wood rot and other fungi. Advanced water repellent surface treatments preserve the condition of masonry and concrete.

Our range of building chemicals are used across the UK by

Construction chemicals must be handled with care.  Please follow product instructions carefully.