Roof Tile Bedding Mortar Mix Ratio

1 mix 3 parts sand to one cement.

Roof tile bedding mortar mix ratio.

Loose flaky cement under ridge tiles. Mortar mix is a critically important building component that must be combined thoroughly. You could also mix in extra to thin out the mortar if it is still a little too thick. Mortar is the bonding material between bricks concrete block stone and many other masonry materials it is made from portland cement lime sand and water in varying ratios.

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. 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. All tiles except plain tiles 2 parts soft sand 1 part sharp sand and 1 part cement. If an incorrect ratio is used this is the outcome click to enlarge.

The bedding holds the roof tiles in place and the pointing helps create a stronger hold and tighter seal. The tiles may potentially slide off the roof and cause injury. Quikrete roof tile mortar is a preblended mortar designed to be a primary or secondary attachment system for roof tiles. Broken or cracked mortar may also cause roof tiles to shift or loosen.

Gradually add 4 litres of clean water per 20kg bag ensuring it does not wash away any of the cement. Left unchecked the loose tiles can become a safety hazard. Strong cement isn t likely to wash out. Unfortunately some profiled roof tiles require a very thick bedding of mortar so to reduce the risk of cracking sharp sand should be introduced to the mix for most tiles.

Mix the mortar well so the additive gets evenly distributed throughout it. Place the required amount of roof tile bedding mortar into a mixer or onto a non absorbent surface. Each of the standard mortar mixes types n m s and o has different performance characteristics for different building.