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How Often Do Flat Roofs Need Replacing?

When a flat roof needs to be replaced is determined by a number of factors which includes the roof’s exposure to the weather, the condition and age of the roofing materials as well as the construction of the roof. However, with proper maintenance and regular inspection, they should be used for nothing less than 50 years. There are some commonly used types of flat roofs which includes Felt flat roof as well as a GRP flat roof.

Felt Flat Roof

The lifespan of a felt flat roof also varies depending on the quality and grade of the felt roof incorporated. This can make the roof last within the range of 2 to 20 years. More often than not, felt flat roofs are usually installed in such a way to keep the costs down which implies the grades of felts that are mostly used are the economical ones implying a very short lifespan.

In the event whereby a premium grade of felt is incorporated in constructing a roof by professional contractors, will be guaranteed by the manufacturer to last between 10 to 20 years.

One of the major causes of a short lifespan in felts is leaks which should be regularly inspected and repaired once identified. If not, the roof will gradually deteriorate and become a lot weaker due to the action of the sun. However, when a felt roof starts to leak, it’s usually a sign that’s approaching the end of its lifespan and a replacement should be taken into account.

GRP Flat Roof

The GRP flat roof or fibreglass flat roof usually comes with a manufacturer’s guarantee of 20 years and is expected to have a lifespan of a minimum of an additional 10 years.

Unlike felt roofs, they’re more resistant to leaks. However, they should also be regularly inspected for leaks which are caused mostly as a result of installation error rather than the GRP roofing approaching the end of its useful life. If the GRP roof repair does not totally resolve the leak, you should start considering a replacement.

Blisters are most common on membrane roofing systems. Lots of contractors will tell you that if there are no signs of further damage, there might not be any need to repair flat roof blisters. They form when pockets of air or water get trapped between layers of the roof’s membrane or between the membrane and the frame. When the sun is out and it heats the pockets expand and stretch the membrane. If you do want to repair your flat roof blisters, there are a few ways to go about it.

If you have a membrane flat roof, cut away the membrane until you reach a place where the membrane is still stuck tightly to the roof. Reapply as many new membrane layers as you cut away over the blistered area. You might even need to do more. To make sure your patch remains watertight, you’ll need to leave at least 6 inches around the edges of the blister.

If you’ve got a felt roof, you can cut an X shape through the blister. Peel back the triangles that you’ve made and let the timber frame dry for a while (so don’t do this when rain is forecast!). Then, coat the area with lots of bitumen adhesive and leave it to dry until it feels tacky. Then press down the triangles of felt firmly into the adhesive.

After that, you’ll need to add more bitumen adhesive to the cuts you made. If you’ve got any spare roofing felt, cut a square that’s about 100mm bigger than the cuts then lay this over the adhesive. If you’ve not got any felt, it’s cheaper to use a self-adhesive flashing strip. Once you’ve laid the strip or patch over, seal the edges with more bitumen adhesive.

Replacement of roof tiles that have fractured, cracked or is missing is vital to avoid roof leaks and ceiling damage once rain and wind appear. Countering the problem swiftly by yourself is probable as long as it's only a few tiles. Charges for tile replacement can be expensive and fluctuate conditional on the company you hire.

The steps to replacing a tile are:

Ensure you have the right replacement tile as there are numerous different roof tiles on the market.

The most common types of roof tiles are concrete and terracotta. You must confirm that the tile is identical to your earlier tile or it may not work and can result in impairment even though you've tried to repair it. If you don't know what the tile is, ask the suggestion of a roofing supplier and they should be able to match it for you.

Get onto the roof.

It is only advisable to do this if the safety is guaranteed, using a steady ladder and maybe even using climbing ropes to protect you in case of a fall. If you don't possess a head for altitudes or you're sceptical about how safe it is for you to get on the roof, call in a professional.

Once you have securely gotten to the cracked tile, you'll want to somewhat lift the tiles that overlay the one to be detached. Do this by means of two pieces of timber to hold them up. Lift the broken tile over the baton with a brick trowel and gently slide it down.

Place your new tile on top of the brick trowel and inverse the steps to remove the tile.

Be certain to place the overlying tiles back into place.

Conduct a fast check across the roof to review any other possible damage. It is always advised to keep update on how the roof is holding out to keep an eye out for other tiles that might need replacing.

How Much Does It Cost To Have Roof Cleaned?

If your roof is dirty, it’s highly recommended that you have it cleaned by a reliable and professional roof cleaning contractor who specializes in cleaning of all types of roofs rather than making it a DIY project or hiring an odd job man who is a jack of all trades. This is due to fact that major mistakes like incorporating inappropriate cleaning agents, pressure as well as wrong cleaning techniques can have a serious negative impact on your home while also putting in mind the several dangers that comes with working at height. However, when hiring a professional roof cleaning person or company, do make sure that the cleaner is fully insured, possesses the relevant training working at height and has the ability to operate access machinery. In other words, when it comes to roof cleaning where safety is the first priority, it shouldn’t always be about the price of the job but the quality of the service you’re going to receive.

There are several variables that determines the cost of cleaning a roof and these includes both the type of the roof in question as well as the size of the house. Let’s take a look!

✓ For a small semi detached or terraced house with a standard front and rear elevation with no side hips, the average cost of cleaning the roof usually starts from £390 and above.

✓ For a semi detached or detached house which is a free standing residential building, the average cost of cleaning the roof usually starts from £490 and above.

✓ For a averaged sized detached house which is a stand alone property, the average cost of cleaning the roof usually starts from £590 and above.

✓ For a large detached house featuring several additional roofs including a porch, double garage and even an extension, the average cost of cleaning the roof usually starts from £790 and above.

How To Clean And Maintain Metal Roofs

If you already have a metal roof or just planning to get one, you’d probably be interested in knowing the cleaning and maintenance procedures. Although, metal roof are widely known to be very easy to clean and maintain and also very durable and long lasting, it’s still strongly recommended that homeowners should do all in their power clean and to take care of their metal roof in order to ensure it they live up to their potentials. Cleaning your metal roofs regularly helps to minimize damaging element such as airborne dirt, pollen, organic material debris, pollution, mildew and lots more. If left unattended to, these unwanted elements can result in several negative issues over time as such as chalking. Due to fact that metal roofs normally features special coatings as well as paint, cleaning the roof is both easy and environmentally friendly, which removes the need to use toxic chemicals. With just plain water, you can effectively wash down dirt, dust and other debris from your metal roof.

While the cleaning process is quite simple, working at height can be incredibly dangerous. It requires skills and confidence, so if you lack either of these qualities, it’s advisable to call in a professional roof cleaning contractor for help. Below is a simple cleaning solution usful for most metal roofs.

✓ In the event whereby water alone isn’t enough, make a cleaning solution using a quarter cup detergent ( which should include car washing soap, mild laundry detergent, mild dish soap) for each gallon of water.

✓ Apply the mixture to the surface of the roof with a wash cloth and ensure to the application gently.

✓ After application, allow it sit for up to 15mins.

✓ Rinse the roof surface with plain water.

If your existing roof is still in good condition but the membrane is getting old, it’s often not worth exposing the structure to the weather whilst the contractor strips off the old membranes. The contractor will leave them in place to act as a base layer for a new roofing system. As long as there are no other problems with your roof, then overlaying is a good way to replace your flat roof.If you have any more questions about flat roofing that aren’t listed here, fill out our form to ask a contractor.

How long it takes to fix a roofing sheet on a commercial property will depend on the size of your roof and how difficult access is. Corrugated iron roofing sheets are much easier to fit than other roofing materials such as clay tiles or EDPM rubber, so that will work in your favour.

The size of the team of the roofing company you engage will also make a difference. If they have a lot of tradespeople working on your roof with lots of experience, it will take less time, while if there are only a couple of people it will take longer.

Another thing to bear in mind when considering how long it will take to fix a roofing sheet is the weather. If it starts to rain, the contractors will probably have to stop and wait, as the roof will be too slippery to work on.

In general, it should take between 1 and 3 days to fit roofing sheets on a commercial property. If you’re not having a full roof replacement, it may only take one day, whereas a completely new metal roof could take up to 3 days.