Rising Damp
Rising damp is a capillary of water, rising through masonry from below to above ground level. Rising damp is normally indicated by high moisture levels at the base of the wall, reducing with increasing height.
Walls suffering from the effects of rising damp will have become contaminated with hygroscopic salts (mainly chlorides and nitrates) causing internal plaster to blister/blow and appear as damp circular patches with white 'tide mark' staining.
Treatment
Treatment for rising damp will involve the installation of a chemical damp proof course using a DPC injection cream. This is a concentrated silane-siloxane cream for insertion into mortar courses to form a remedial damp proof course in existing walls.
Plastering
Once the injection has been completed and the old salt contaminated plaster has been removed to a minimum height of 1.2m we will then re-plaster the area using a washed sand and cement render mix with a combined waterproofing additive. A finishing coat of plaster is applied over this to blend in with existing.
Other causes of damp
TVP can provide a quotation for external maintenance work as part as ourassociated building works.
One of the major causes of dampness is penetration by rain therefore the external areas of your house need to be inspected to eliminate possible sources of damp. Areas inspected will be:
Guarantee
We offer a company guarantee for all specialist remedial damp proofing, timber treatment and tanking works undertaken by TVP Ltd. Installations of chemical damp proof courses and timber treatments are issued with a twenty year guarantee and structural waterproofing with a ten year guarantee.
We can also provide, for an additional fee, an insured backed guarantee through the Guarantee Protection Insurance Ltd. These guarantees are only available through properly qualified and approved members.
Walls suffering from the effects of rising damp will have become contaminated with hygroscopic salts (mainly chlorides and nitrates) causing internal plaster to blister/blow and appear as damp circular patches with white 'tide mark' staining.
Treatment
Treatment for rising damp will involve the installation of a chemical damp proof course using a DPC injection cream. This is a concentrated silane-siloxane cream for insertion into mortar courses to form a remedial damp proof course in existing walls.
Plastering
Once the injection has been completed and the old salt contaminated plaster has been removed to a minimum height of 1.2m we will then re-plaster the area using a washed sand and cement render mix with a combined waterproofing additive. A finishing coat of plaster is applied over this to blend in with existing.
Other causes of damp
TVP can provide a quotation for external maintenance work as part as ourassociated building works.
One of the major causes of dampness is penetration by rain therefore the external areas of your house need to be inspected to eliminate possible sources of damp. Areas inspected will be:
- Downpipes and hoppers which are too small or missing, blocked, corroded or damaged, leading to leakage or overflows and wetting of walls. Alternatively it could be caused by downpipes discharging at the base of walls
- External ground levels. Checking ground levels are not too high and bridging the existing damp proof course
- External rendering. Checking rendering is not touching the ground and allowing damp to be drawn up and bridge the existing damp proof course
- Obstructions, i.e. stored items, lean-to sheds, walls built against property
- Perished pointing and spoiled bricks allowing damp to penetrate
Guarantee
We offer a company guarantee for all specialist remedial damp proofing, timber treatment and tanking works undertaken by TVP Ltd. Installations of chemical damp proof courses and timber treatments are issued with a twenty year guarantee and structural waterproofing with a ten year guarantee.
We can also provide, for an additional fee, an insured backed guarantee through the Guarantee Protection Insurance Ltd. These guarantees are only available through properly qualified and approved members.