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Common Roofing Questions Answered

By John Doe
Published in Domestic Roof
March 13, 2021
4 min read
Common Roofing Questions Answered

Why Do My Tiles Break When I Walk On Them?

Why do my tiles crack when i walk on them?

This is a common occurrence the homeowner witnesses after laying gently on a new tile floor that appears to be in excellent condition. The tiles may even appear to be firmly adhered to the adhesive, but when walked upon the tiles break.

There are several reasons why this has happened. Some are easily corrected, others not so much.so why do your floor tiles break when you walk on them?

This question often baffles people, and if answered correctly should prevent further breakages. That’s assuming that the tile is of a decent quality: the surface (potentially even more than the edges) must be firm enough to withstand mechanical movement in particular.

Why Do I Have To Mechanically Fix Ridge And Hip Tiles?

Although ridge and hip tiles (as defined within bs 5534) have been fixed traditionally with a simple mortar joint using an adhesive, since the early 2000s it has become more common for them to be mechanically attached to the roof. An appropriately sized and shaped accraded tile webbing is bonded by a suitable bonding mechanism to the area of the roof where ridge and hip tiles will be fitted. The tile webbing will hold a new tiling unit in place over this bonding mechanism, whether that be adhesives, resin or mechanical fixing.i’m getting really frustrated at having to mechanically fix ridge and hip tiles. We’ve done about 6 tiles a day (i know they are not all technically ridge/hip tiles but it’s just easier to refer as such).

I know this is the building regs but we are spending 2-3hrs a day just doing this whereas others are doing 1 or none per day . The result is that i am falling behind on my production and so we are making less profit. I want to quit asap but worried i won’t get another job. Any advice?.

The code says it all, i suppose. The building standards code (bs 5534) states that ridge and hip tiles must be mechanically fixed to the roof or wall slope so that the joint between it and the line of eaves cannot be opened freely. Now, if you have never been on a roof before and struggled to open up spaces between tiles, you may not see the point in this. Or you could be a good citizens and do as the inspector said!.

Ridge and hip tiles cover the ridges/hips of roofs. They should not be penetrating the roof enough to cause a gable end rafter to sit on the tile. This would create an imbalance in the structure and could cause the ridge or hip tile to fail and fall off. This is why ridge and hip tiles are mechanically fixed to the roof structure, as a raw ridge or hip tile is liable to pop off during high winds causing damage below.despite being a well-known building standard, bs 5534 has always been a source of some puzzlement for the tiling trade.

The use of mechanical fixing into solid single storey roofing is perhaps the most challenging area and so ridge and hip tiles is perhaps the most difficult point to agree with during the installation and testing periods.however, i do find that many professionals are unsure as to why they are required to mechanically fix ridge and hip tiles. How do we go about achieving it? What is the procedure? And what are the common issues faced when bonding ridge and hip tile roofs?.

Do I Need To Ventilate My Roof When Using A Breathable Underlay?

Vapour-permeable products, like traditional felt and rubber roll (also known as damp-proof course - dpc) allow vapour to pass through it during the process of diffusion. The benefit of having a vapour permeable product is that the membrane can work to its full potential if there are any leaks in the roof structure. Of course, this does not mean a roof with breathable underlays will not ‘go damp’, but it does cut down on the risk of this happening as the permeability allows moisture to disperse through the underlay and away from the membrane.breathable is a term used mainly with roofing products, as opposed to vapour-permeable, which also uses a breathable membrane. More and more people are choosing to go ‘green’ and install breathable underlays in an attempt to reduce their greenhouse gas emissions. If you are using a breathable product, there are some things you need to understand about its ability to allow air through before you proceed with a diy job.

A lot of people don’t realise that just because they see the word ‘breathable’ on the packaging it can still trap moisture.if you are planning to get a breathable attic floor then this will affect ventilation. The air that goes into your roof space will go through the underlay and the resulting condensation will lead to a damp roof. This is especially true in cold climates or if your underlay has been installed in a poorly-ventilated attic. This is why, in many cases, breathable underlays must be installed with air-permeable products such as 3 layer foil backed felt.…but what about when using a breathable underlay? Well, the process of breathing is not easy to watch, or even imagine.

The ventilation process involves moving air through different areas of the body, and it does this in stages. There are tons of vapor retarders available today, which are made from different materials. Twitter bootstrap is one such material which is made from polyester; it’s not as breathable as you might think.a vapour-permeable underlay allows vapour (pure water) to pass through the roofing felt, wherein it evaporates. Many vapour-permeable underlays also allow air to pass through which allows for the drying of the uppermost tiles, or decking.breathable underlays allow moisture vapour to pass through them, but may or may not allow the passage of water and air. Many are marketed as.


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How Do You Install A Breather Membrane
John Doe

John Doe

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