07710 444910

SERVICES

Damp proofing and plastering services.

Nine things, in the order they usually come up. All of them start from the same place: establishing the mechanism before specifying a repair.

EXPERIENCE

38+ years in the trade

GUARANTEE

30 years on all damp work

QUOTES

Free, in writing, after a survey

INSURANCE

£1m public liability

WHAT WE DO

Six things, each with a page.

01

Rising damp treatment & DPC

Groundwater rising through masonry by capillary action, where the damp proof course has failed or was never fitted. We inject a silicone-based DPC at mortar-course level, take contaminated plaster back to the brick, and replaster in a salt-resistant render system so the hygroscopic salts left in the wall cannot bloom through the new finish.

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02

Penetrating damp

Water crossing the wall from outside. We trace the route: perished pointing, cracked render, a bridged cavity, blocked gutters, external ground levels sitting above the DPC. Then we repair the defect and make good internally once the wall has dried. Treatment without the repair will not hold.

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03

Condensation & ventilation

Moisture generated inside the building condensing on cold surfaces. We assess where the humid air comes from and where it currently goes, then specify extraction, background ventilation or insulation. No chemical damp treatment is appropriate for condensation, and we will say so if that is what you have.

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04

Plastering & re-plastering

Sand and cement render, waterproof render systems, skimming and full replastering. Plastering is half of what we do, which means damp repairs are finished by the same team rather than handed on to somebody else.

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05

Basement & cellar tanking

Below-ground rooms held dry with a cementitious tanking slurry or a cavity drain membrane, chosen on water pressure and on how the room will be used. Habitable conversions are detailed differently from dry storage.

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06

Timber & woodworm treatment

Damp brings decay with it. We identify wet rot, dry rot and active woodworm, cut out and replace affected timber, treat the surrounding structure, and deal with the moisture source that caused it.

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ALSO

And the work around them.

07

Re-pointing & external walls

Perished mortar joints let water straight into the wall. We rake out and repoint in a mix suited to the brick or stone rather than the hardest one available, and repair render where it has blown or cracked.

08

Damp surveys & reports

A site survey with moisture readings and a written diagnosis of the mechanism at work, the repair specified and the price given before anything is booked in. Useful for homeowners, and for sales held up by a mortgage valuation.

09

General building work

NTB also carries out general building work. Where damp repairs open up into something larger, a rebuilt gable, a new floor, structural making good, it stays with one team and one point of contact.