Property Repair Systems

01626 331351

Quick DIY Master Class in Dampness and Condensation - become your own Expert in 1 hour! Buy our "Dampness in Buildings" reprinted book by the great expert Graham Coleman. A great read, short and to the point.

Click here to buy the reprint.

VILLA DAMPNESS PROBLEMS - the Mediterranean construction method, (concrete frame with rendered hollow block infill panels), suffers from four main problems. We have simple, effective Guaranteed solutions for you or your local Builder to apply. We are Qualified Surveyors in dampness in buildings. We offer free advice by telephone and E Mail.

1. Black Mold on walls - wash down with our Mold Cleanser, use our Stain Blocking Paint where necessary, then re-paint with our Anti-Mold Additive in your paint. Guaranteed for 5 years. Add 'trickle vents' to window frames, or install a Dehumidifier.

2. White Salts on walls - fluffy white salts can be neutralised using our Salt Neutraliser, if the plaster itself is not damaged. Do not confuse with powdery, outdoor Lime deposits.

3. Plaster damage, repairs - bubbling, scaling, flaking plaster or render needs to be removed to at least 300mm clear in all directions of the damp area, using a Damp Meter to check for the furthest extent of readings. Replaster to our Specification in sand and cement, finished with Multi-Finish, using Renderproof in the water.

4. Plaster damage, replacement - instead of sand and cement, particularly where washed, sharp sand is hard to find, you can fit Mesh Membrane. This plastic, dimpled material is fixed to the wall with plastic sealed plugs and can be directly plastered with any type of plaster or render. The new surface is then completely protected from future problems. Guaranteed for 20 years.

5. Damp at the wall base - usually caused by rainwater splash up and penetrating damp. You need to seal the wall at the base joints (floor to wall crack) using Fillet Seal. Then the outside wall needs to be 'tanked' using tanking slurry - Bondacryl mixed with fresh cement.

6. Damp Proof Course - damp proofing UltraCure cream should be injected above the splash up zone, say 250mm (10 inches) above external ground level.

7. Damp Meter - essential to check damp patterns and sources in masonry and timber. We supply advice and help you with analysis to solve your specific problems.

8. Humidity Meter (electronic hygrometer) - measure the amount of moisture in the air inside your building and control the level using ventilation or heating, or use a dehumidifier.

3 SIMPLE STEPS DPC - click for photos

We can supply the easiest to use Professional and DIY range of materials on the market.

Quick Cream - new, easy to install, cream product - no pump required, no mess, no smell - includes injection nozzle extension.

A 'damp meter' and surface thermometer (see www.dampness-info.co.uk/meters.htm)are useful tools for this diagnosis - if not available use the back of your hand to assess the relative dampness of one affected area to another unaffected area..

British Board of Agrèment - BBA Test Certificate No: 02/3961 - as used by the professionals. The BBA is a Government Approved organisation which has been testing building materials for over 30 years. Note - not all damp proofing materials have passed these tests - beware of cheap imitations).

click here for a check list if you want to diagnose your damp

click here if you would like to read a genuine testimonial

380cc tube with extension nozzle - makes a maximum of 3.5 metres/11 feet of damp proof course in single thickness masonry (spacing interval 120mm/4.5 inch walls). Can be applied with a DIY, standard 380cc version mastic/sealant gun or a professional 380cc skeleton gun (see our Order Form)

1000cc tube with extension nozzle - makes a maximum of 9 metres/30 feet of damp proof course in single thickness masonry (spacing interval 120mm/4.5 inch walls). Requires a professional 1000cc skeleton gun (see our Order Form)

3 litre bulk pack, for professionals - makes a maximum of 27 metres/90 feet of damp proof course in single thickness masonry (spacing interval 120mm/4.5 inch walls). Requires a pump up dispenser.

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* Optional Items:

- Replastering Additive (Rendapruf)

- 'Tanking' waterproofing liquid (BondAcryl)

- Certificate of Product Guarantee

- Salt Neutraliser

- Anti Mould paint

- Professional Skeleton Guns

- Professional Extension Tube (1000cc)

- Anti Dry Rot Paint

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First, check for high ground levels, leaking gutters and downpipes, water leaks. A Damp Proof Course must be at least 6 inches (150mm) above abutting ground level (whether internal or external), to avoid splash up or 'bridging'.

1. Drill 12mm diameter holes at 120mm intervals in the mortar course (or via the brickwork, angled down to meet the mortar course) selected to be at least 150mm above outside or abutting ground level. Blow or vacuum holes to remove dust.

2. Fit the extension nozzle to the cartridge tube and load into the skeleton gun

3. Inject cream from the bottom of the hole outwards until the hole is full.

4. Replaster to our specification.

Treat any skirting boards or joinery with Boron Ultra Gel.

Holes can be capped with mortar or fitted with a plastic plug

Replastering to a minimum of 1.2 metres internally, to our specification, using sand and cement and Rendapruf integral waterproofer, is required to finish the job and to prevent 'salts' damage to plaster finishes and decorations.

Our Products required: Quick Cream DPC, Skeleton Gun - either a 380cc or professional 1000cc

Optional Products: Rendapruf Replastering Additive (5 litre), Wall Plugs, Boron Ultra Gel (2.5 litre), UltraProof exterior wall treatment (5 litre or 25 litre), Anti-Mould Paint (2.5 litre), Professional Skeleton Guns (380cc or 1000cc), Professional Extension Nozzle (for repeated use with 1000cc cartridges)

Tools Required: 12mm masonry bit, electric hammer drill, eye protection

Go straight to Price List and Order Form

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Typical usage rates:

4.5 inch thick (115mm) single leaf wall - 1000cc (1 litre) per 9 metres, inject from either side

9 inch thick wall (230mm) double leaf solid or cavity - 1000cc(1 litre) per 4.5 metres, inject from one side or from both sides.

18 inch thick wall (460mm) solid or random fill - 1000cc (1 litre) per 2 metres, inject from both sides

Replastering Notes: don't forget that replastering is essential if dampness has affected your plaster because of the 'salts' that come with the water: you have two options - either replaster to our specification using sand and cement, with Renderpruf salt inhibitor/waterproofer in the water or look at the Wall Membrane option. Wall Membranes offer a considerable improvement over sand and cement - they produce a warmer surface, can be insulated easily and can be directly plastered with lightweight, modern plasters, like Carlite Bonding.

For easy fix Membrane information go to: www.drywallandfloor.co.uk