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Fibreglass, or GRP, flat roofs are very durable and should last you years, but over time they can become brittle and you might see some cracks or holes forming. Luckily, you can repair a fibreglass flat roof and it doesn’t have to be too difficult. Cracks in a fibreglass flat roof If you notice long cracks in your fibreglass roof, you can often use a fibreglass crack sealant. Simply clean the area, squeeze the sealant into the crack, then smooth it off. If you want it to look neater, you could coat the entire roof with a restorative coating which will make it look new again. Hole in a fibreglass roof If you notice a hole in your fibreglass flat roof, you’ll want to get this repaired as soon as possible to avoid any rainwater getting into your home. There are lots of fibreglass roof hole repair kits on the market, both online and in DIY stores, so you shouldn’t have trouble picking one up. They usually contain a mouldable UV cured patch that you can stick onto the hole. It will harden and become instantly weatherproof, so is the perfect emergency repair solution. Fixing pin holes in a fibreglass flat roof Unfortunately, if you find pin holes in a fibreglass flat roof it’s often because the installer didn’t use enough resin during the fibreglassing process. Luckily, if you can’t get back in touch with the installer or you only notice after a few years, you can fix this yourself. Sand down the roof back to the clear resin layer. Clean the entire roof with acetone and reapply some GRP roofing resin. Ensure that all the pinholes are filled – you might need two coats.

It depends on the material you use, but if your flat roof is installed correctly it should last for at least 10 years, and at least 20 if a material other than felt is used. Always question a roofing company when they quote to find out what materials they use and what guarantee's they offer.

Most material warranties come from the waterproofing layer manufacturers, and can last between 5 and 20 years. If your roofing contractor is on the manufacturer’s installer list, it might cover their work. It’s important that you always read through all the information given to you about your warranty so you know exactly what is included.

How To Clean A Fibreglass Roof?

If you have a dirty fibreglass roof or perhaps you’re just planning to have one installed on a newly constructed house, then you’d probably want to know the best way to have your fibreglass roof cleaned.

Generally, fibreglass roofs are of great quality and happens to be a lot more resistant to moisture, heat, water and even fire when compared to the other alternative flat roofing materials. As a result, they require just a little maintenance but this doesn’t mean they should be totally ignored. Truth be told, cleaning of a fibreglass roof is as easy as it get, however, when it comes to working at height, skill and confidence is paramount to guarantee your safety. If you lack any of these two qualities, then it’s highly recommended that you sought the services of a reliable roof cleaning contractor who can do the work safely and perfectly. If you’re able to clean and maintain your fibreglass roof as you should, you wouldn’t have to think about replacement for about 20 to 30 years.

Cleaning is simple and doesn’t take much time. Now let’s take a look at the process.

✓ Preparation. Hose down the vegetation around the area with water to protect them. Once done, mix a gallon of warm water with one quarter cup trisodium phosphate and 1 quart of bleach. Put this mixture into a garden sprayer and sweep any dirt or debris off the roof with a broom.

✓ Application. Spray the mixture over the fibreglass roof, ensuring that it gets to all the necessary corners where dirt may be hidden. Allow this applied solution to sit for up to 15 minutes to loosen the stubborn stains and dirts on the roof.

✓ Finishing. Spray cold water to wash down all the solutions. If there’s still some dirts, you can repeat the process till the fibreglass roof is entirely clean.

How To Clean Moss Off Roof?

Although moss attack on your roof is a less common occurrence, but when they occur they can be very harmful to your asphalt shingles if not attended to. Generally, moss are commonly found in damp environments such as the North slopes, overhanging treses or overhanging regions of the roof which causes shade which enables moisture to be stagnant and moss to develop. If you observe a green fuzzy stuff appearing on your roof, that’s likely to be moss.

The same way algae navigated its way to your roof as they can be airborne and travel via wind, squirrels, birds or other little flying or climbing animals, moss also gets carried similarly. One moss finds its way up your roof, they’ll find spaces between the shingles where they’ll form thick spongy moss which can be difficult to clean off if you don’t know the best way to go about it.

If you’re not a competent DIYer or confident enough to carry out this task, we’d strongly recommend you hire the services of a professional who can guarantee the best results effortlessly.

The best way to go about the cleaning task for both your roof and environment is to incorporate a product called Spray and Forget or Wet and Forget. You can get these at most local hardware stores. Simply put the product into a hose end sprayer and can be applied from the ladder at the edge of the gutter or even from the ground. This method may take a up to 6 months before you’ll start seeing the results but it happens to be the safest. Another method that can be used is bleach and water which is very aggressive but provides a quicker result. However, this is best done by a professional to avoid seriously damaging your roof.

Fitting a Velux window into a slate roof is very similar to the way you’d install it in other roof types. All roof windows, whether a Velux-branded one or not, will come with detailed instructions for you to follow if you want to have a go at fitting it yourself. But here are some brief instructions to give you an idea of what’s involved in installing a Velux window into a slate roof:

1. After you’ve removed the Velux window from its packaging, remove the sash (the part that opens) from the frame, according to the manufacturer’s instructions.
2. Next, you need to prepare the opening for the window. You can often cut through the felt, remove one of the battens from under a slate, then slide all the slate tiles into the roof space. You should then make the cut 40-60mm wider than the window, cutting away roof timbers then replacing them with more around the opening to strengthen it.
3. The roof window’s bottom brackets need to be installed on one of the existing battens for the slate roof. One of the slate courses should line up 105mm below the top edge of the batten you use.
4. Then, measure from the top edge of the batten upwards to the height of the window plus 45mm. This is where the top installation batten should be installed, with an overhang of 100mm on each side.
5. Remove the course of slates below the window, trim any excess felt and fold it over the surrounding timber. This helps with waterproofing.
6. Add the insulation collar according to the Velux window manufacturer’s instructions.
7. Place the frame in the opening, adding the brackets according to the instructions. You’ll find that lots of roof windows have pre-drilled holes to make it easy for you.
8. Replace the sash and line up the hinges. Take a look at the opening at the bottom between the sash and the frame – it should be even along the entire width. Remove the sash again to fix the upper brackets according to instructions.
9. Add the underfelt collar for your roof window as instructed by the manufacturer, then replace any slates at the bottom. You might need to cut them to size.
10. Next, add the flashing according to the instructions, along with any parts that are not yet attached, including the hood section and top flashing piece.
11. Replace all the slates around the window, allowing 60-100mm of space between the course of slates above the window and the top of the window to allow for rainwater drainage. Then replace the sash into the frame again.
12. Add the vapour barrier on the inside of the window using the screws provided, then tape it to the existing vapour barrier to prevent moisture from reaching your roof structure.

And that’s it! If you think that sounds a bit complicated, ask a roofer or window installer to fit your roof window into a slate roof for you. You’ll get a better finish and you can be sure that you won’t get any leaks from a botched installation.

There are a few reasons why commercial buildings often have flat roofs. Lots of people argue that flat roofs aren’t as attractive as pitched roofs, which is why it’s uncommon to see a residential property with an entirely flat roof. Lots of commercial buildings don’t need to look attractive, so go for flat roofs because they’re cheaper.

Flat roofs tend to be less expensive than pitched roofs, especially for large, broad commercial buildings. Some commercial buildings simply couldn’t have a pitched roof because their width would mean that the roof would have to be extremely high. Flat roofs are also cost-effective for commercial buildings because it means that air conditioning and ventilation units can go on the roof, saving space in and around the building.

Commercial buildings also often have flat roofs because they don’t need the loft space that residential properties need. If there’s no need for the space, it doesn’t make sense to spend more money on a pitched roof just to keep the attic space empty. Flat roofs also give the commercial building owner the opportunity to use the space as a smoking area for employees or give access to fire escapes to upper floors.

If you’re having a commercial property build, make sure you speak to the experts about the type of roof that is suitable for you. If you’re planning on having air conditioning or ventilation systems installed within the property, you might be best off with a flat roof – but if you need some extra storage space, a pitched roof might work best for you.

How to repair your flat garage roof will depend on what it’s made from. Lots of flat garage roofs are made from EDPM rubber, asphalt or felt. We’ll explain how to carry out repairs on your garage roof here. EDPM rubber flat roof repair EDPM rubber is an excellent choice for a flat garage roof and should need little maintenance. But if you do need to repair it, there are a few easy fixes. If it’s a small crack or tear, apply some lap sealant to the area, but don’t use too much. If you go for a more professional repair later, the sealant will need to be scraped off, so if there’s too much it might cost you more in labour. If you need to repair the flashing, buy some malleable flashing tape so you can form it into the right shape. Clean and dry the area that needs repairing, then apply an EDPM primer. When that’s touch dry, stick the patch of flashing tape down from the centre outwards with a roller. Repairing an asphalt flat garage roof Asphalt is also very hard-wearing, and when it does need fixing, the fixes often last a long time. So if you do get cracks or blisters, you can use a paint-on fix from a tin as a temporary repair. When it’s time for a more permanent fix, you can add a small patch of torched-on roofing felt or use a liquid system, but the high-quality ones are often only available to trade customers. How to repair a felt flat garage roof Felt can be repaired in a similar way to asphalt flat garage roofs. For small cracks or a temporary fix, try a paint-on treatment from a tin. But for something more permanent, use a patch of torched-on roofing felt or a liquid system. If these don’t stick, unfortunately it means it’s time for a new felt garage roof. If you do need a new flat garage roof, leave it to the professionals who will ensure that your new roof will last for years.