Roof cement is primarily used to hold roof tiles hip tiles and ridge tiles securely in place it also keeps out rainwater.
Ratio of sand to cement in a roof tiles.
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 typical brick wall.
All tiles except plain tiles 2 parts soft sand 1 part sharp sand and 1 part cement.
Mix ratio generally flooring tile fixing ratio of cement sand used in flooring tile installation is 1 ratio 3 1 3 cement sand 1 3 total r 1 3 4 quantity of cement calculation for 100 sqft tile installation.
But my roofer has suggested 3 1 building sand cement rather than sharp sand.
Plain tiles 3 parts soft sand 1 part cement and plasticiser.
If we re talking about common roofing jobs like pointing a chimney laying ridge tiles or flaunching the top of a chimney i would recommend a 3.
The basic mix ratio for concrete is one part water two parts cement and three parts sand.
I m having my ridge tiles re pointed all the old mortar shall be removed from doing a google search nhbc recommended to use a ratio of 3 1 sharp sand cement.
An alternative ratio is one part cement two parts sand and three parts gravel with enough water added until the mixtures reaches the consistency of thick mud.
The basic mix ratio for concrete is one part water two parts cement and three parts sand.
This ratio of sand to cement is ideal for exposed areas such as the roof without being stronger than the bricks or ridge tiles you are working with.
We recommend choosing a soft sand that is fairly coarse avoid soft sands that are at the silty end of the spectrum.
For tiles where only a thin bedding of mortar is required i e.
In such a case the recommendation is m30 that s 1 portion of cement 0 75 portion of sand and 1 5 portion of aggregate.
1 mix 3 parts sand to one cement.
Lime is also a common additive to the mix.