The plactizer will make the mixture easy to work with slow down the drying time and prevent cracks.
Repointing roof verge.
Obtain clean water and wet the surface using a brush.
Mortar can be coloured to match the roof covering.
If there are repairs to be done on the roof replace worn out tiles and make sure the entire surface is covered.
This is a typical 3 1 roofer s mix 3 parts sand and one part cement.
This is how i cement roof tiles pointing the verge in with two coats of cement the cement i use has black dye mix in it to help match the roof tiles in colo.
Use a soft brush to wipe away debris particles and dust that build upon the verge as a result of chiseling.
Showing a nice bit of work pointing a verge on the end of the roof on this home in sheffield.
The correct mix ratio is 3 parts sand to 1 part cement this is much stronger than bricklayers use 5 1 as the cement on the roof must withstand more driving rain than a typic.
When a slate verge is being replaced then it will be repointed as the slates are secured by nails rather than mortar.
Roof cement is primarily used to hold roof tiles hip tiles and ridge tiles securely in place it also keeps out rainwater.
Bear in mind that as time will pass the bedding will gradually wear out.
Its job is to keep a lash on the roof tiles.
Once the tiles start to get detached it is time for re bedding.
Mix cement 2 parts building sand 1 part sharp sand and 1 part cement plus plactizer.
Rebedding roof verges by making necessary repairments.
Colours include slate grey black brown and red.