What is better damp proofing or waterproofing?
Whereas damp proofing only controls water vapour from the soil moisture and will not stop the inflow of liquid water. On the other hand, waterproofing is effective in preventing water from entering your basement through any holes or cracks.
Is damp proofing required by code?
Code Interpretation This section implies that dampproofing is required to all below grade floors and walls where hydrostatic pressure will not occur. ASTM defines dampproofing as the treatment of a surface or structure to block the passage of water in the absence of hydrostatic pressure.
When would you use water proofing instead of damp-proofing?
Some of the key differences between the two are the physical properties of the materials used, the thicknesses applied and the application service conditions. Damp proofing is intended to keep out soil moisture, while waterproofing keeps out both moisture (or water vapor) and liquid water.
What is the minimum thickness of damp proofing required underneath a concrete slab floor?
Where installed beneath the slab, dampproofing shall consist of not less than 6-mil (0.006 inch; 0.152 mm) polyethylene with joints lapped not less than 6 inches (152 mm), or other approved methods or materials.
Do you need building regulations for damp proofing?
Damp proofing requires building regulations for new construction and alterations of habitable spaces where the walls or floors are in contact with the earth. This applies to walls and related portions that retain earth and enclose interior spaces and floors below grade.
What’s the difference between damp proofing and water proofing?
With proper surface drainage, correctly installed foundation drains at the footing, and the absence of hydrostatic pressure that would drive water infiltration, damp proofing can supply adequate, long-lasting protection. Waterproofing concrete, on the other hand, is designed to stop water infiltration through a concrete structure.
When to use dampproofing or waterproofing on a concrete foundation?
The International Residential Code (IRC), in Section R406, specifies the conditions that require either dampproofing or waterproofing. Any concrete or masonry foundation walls “that retain earth and enclose interior spaces and floors below grade shall be dampproofed from the top of the footing to the finished grade.”
What do you need to know about waterproofing materials?
Waterproofing materials also are designed to withstand hydrostatic pressure and are often in excess of 40 mils. According to ICC-ES, a nonprofit company that does technical evaluations of building products, components, methods and materials, waterproofing must be able to do three things.
Do you have to use damp proofing on exterior of house?
The damp proof coating must be installed to meet your local building codes. Damp proofing installation generally focuses on the exterior surface. To achieve the maximum results, it’s best to hire a professional to do the job unless you are prepared to do a lot of digging and pressure-washing.