To repair a roof made of asbestos-cement slate, it is necessary to first familiarize yourself with the place of damage, evaluate the rafter system and immediately proceed to work.
Speaking about the material itself, one cannot fail to note its great popularity over the years. Even the presence of a wide range of roofing materials, presented to the modern consumer, does not turn homeowners away from choosing a classic slate. This is due to a good ratio of quality and price. It is necessary to highlight such positive qualities of slate as:
- Resistance to elevated temperatures;
- Chemical resistance;
- Easy installation method;
- Durability;
Among the disadvantages it is worth noting the low strength and high weight of the material. Both of these factors in most cases are the cause of various roof damage.
In order to correctly approach the repair, you need to objectively assess the level of damage material inflicted. In the presence of minor cracks, the problem will most likely be solved only by termination, without resorting to replacing the flooring. In this case, you will need to perform surface cleaning, make sure the material is dry and fill the cracks with the repair mixture. Most often they use for this:
- Putty made from drying oil and chalk. On top of it, the surface is stained with paint for better durability. The mixture has a weak elasticity and easily crumbles.
- Bitumen tar - alas, this material is used in a state preheated to high temperatures, which requires skills.
- Bitumen type sealant is a convenient and easy to use material.
Of course, if the slate sheet has severe damage, it is best to replace it completely, rather than trying to glue it. In order to dismantle a certain element, there is absolutely no need to disassemble the entire roof. It will be quite enough to remove the fasteners next to the sheets and lifting their edges to replace the damaged sheet with a new one.
If the area of damage to the roof exceeds the 40% threshold, then most likely it will be necessary to complete its replacement. Before removing the flooring, items such as skates and snow holders should be removed. Only after this can one begin to remove the slate sheets from the upper rows to the lower ones.
After the dismantling is completed, the condition of the waterproofing lathing, insulation and rafter system should be assessed. Anything that has damage should also be dismantled and replaced. Only after this can you begin to install a new roofing material.
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