Site Inspection

1. Is your site level?

Tongued & Grooved/Timber

Existing T&G timber floors must be level, sagging boards replaced and squeaky boards repaired.

Concrete floors

In the case of concrete floors run a straight length of timber over the floor this will give an indication of potential problems.

The floor may need to be repaired with floor levelling compound.

2. Is your subfloor dry?

Timber Floors
Existing T&G timber floors must be below 8% moisture content.

(This is not usually a problem in modern houses but older houses may not have sufficient damp proofing underneath)

Concrete Floors
In the case of new houses the concrete floor must be allowed to dry for at least 1 month per 1” depth of sub floor, before testing for moisture.

The concrete floor must then be tested for moisture. An installer should test this with a concrete moisture meter. An effective cheap way to test a concrete floor is to tape down a 2ft X 2ft plastic sheet with waterproof tape in a number of locations on the floor. A lamp should then be placed over the area. After a 24 hour period if there is any condensation or any change in colour of the concrete

Canadia’s recommendation is that our timber floors should not be fitted over concrete that reads over 3.5% moisture.