Maya Ellison
Ridge tiles are an important, yet often overlooked, aspect of a building's roof. They cover the horizontal line where the two planes of a pitched roof meet, providing protection from leaks, heat, and wind. While there are different types of ridge tiles to suit various styles of homes, the fitting process is generally straightforward and can be carried out by both professionals and DIY enthusiasts. This paragraph will provide an introduction to the topic of fitting plastic ridge tiles, highlighting their benefits and the key steps involved in the installation process.
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What You'll Learn
Plastic roof tiles are lightweight and inexpensive
Plastic roof tiles are a fantastic option for those who want a classic slate look with a more practical and lightweight alternative. They first gained popularity in the early 21st century and have been a common roofing solution since.
Plastic roof tiles are lightweight and easy to install. They can be installed by a single person due to their handy size of 107 x 57 cm. The tiles are screwed to the roof structure, providing double safety and a 100% leak-free roof. The tiles are also easy to maintain, as they do not need to be painted or coated, and their smooth surface makes cleaning a breeze.
Plastic roof tiles are also inexpensive. The main cost saving comes from the reduction of building supplies and installation time. Plastic roof tiles can be installed quickly, with up to 35 m2 per hour, and they require no maintenance, saving time and money in the long run.
The installation process for plastic roof tiles is straightforward and can be done by both tradespeople and DIYers. No specialist tools or equipment are required, and the tiles can be installed in low temperatures (as low as 0°C). However, it is important to properly prepare the roof structure before installation and to weatherproof the intersection where the ridge tile meets the hip tile.
Overall, plastic roof tiles offer a cost-effective, lightweight, and easy-to-install roofing solution, making them a great choice for those looking for an alternative to traditional slate or clay tiles.
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Prepare the roof structure for tile installation
Before installing plastic ridge tiles, it is important to prepare the roof structure to ensure a smooth and durable tile installation process. Here are the steps you should follow:
Firstly, thoroughly inspect the roof surface. Ensure that the area is flat, smooth, structurally sound, and free from debris. This includes checking that the sheathing joints are fully supported by framing and blocking, with metal flashing and any other required specialist flashings in place. Make sure to clean the interlocking areas to minimise moisture and potential ice damming.
Next, prepare the substrate by sloping it and anchoring it securely to the framing. Make appropriate provisions for flashing and roof penetrations. If your roof has existing ridge tiles, you will need to remove them along with the old mortar. This process will involve working at height, so familiarise yourself with health and safety guidelines and ensure your equipment (such as ladders and scaffolding) is suitable and stable.
If you live in a cold climate, you should be aware that plastic roof tiles can be installed in low temperatures, even as low as 0°C. However, in such conditions, the tiles should only be hand-fastened, and you should condition the tiles at a temperature of at least 7°C for 24 hours before installation.
Finally, check the weather forecast before beginning work, as you will want to avoid installing ridge tiles in rainy conditions. By following these steps, you will help ensure your roof is ready for a successful tile installation.
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Use a dry ridge system or mortar
Plastic roof tiles are a great option for those who want a lightweight, inexpensive, and straightforward installation process. They can be easily installed by both professionals and DIYers without the need for specialised tools or equipment. However, when it comes to securing these tiles, you have two main options: using a dry ridge system or mortar.
Dry Ridge System
The dry ridge system, also known as mechanical fixing, is a modern alternative to the traditional mortar method. It offers several advantages that make it an increasingly popular choice. Firstly, it is recognised as a more long-term solution compared to mortar, which tends to fail over time due to factors such as mix quality, structural movement, and environmental conditions. The dry ridge system provides better durability and ventilation, making it a more cost-effective option in the long run. Additionally, it is easier to install and can be done in any weather condition.
Mortar
Mortar has been the traditional method for installing tiles and fittings for centuries. However, recent changes in building regulations, such as BS 5534, no longer recognise mortar as a sole means of fixing. Now, any use of mortar bedding must be accompanied by a mechanical fixing method. While mortar may be cheaper in the short term, it requires more frequent maintenance and has a limited lifespan.
Installation Techniques
When using a dry ridge system, you can follow these general steps: loosen the rafter with a pry bar and affix the brackets underneath; bend the brackets to the required height with a hammer; attach the batten, ensuring it is cut to the correct length; unroll the ventilated ridge roll (if included in the kit) along the ridge and secure it with nails; apply the butyl adhesive; and finally, fix the ridge tiles using ridge unions, ensuring they are level.
For mortar installation, a common mixture is three parts sand to one part cement. This can be used to cement the ridges in place, and additional mechanical fixings can be added for security.
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Affix tiles using ridge unions and clamps
Plastic roof tiles are a lightweight alternative to slates, offering a straightforward and inexpensive installation process that can be managed by both professionals and DIYers. Ridge tiles are an essential component of a secure roof, preventing leaks and protecting against the elements.
When affixing tiles, it is important to follow the manufacturer's instructions for the specific dry ridge kit being used. The process typically involves first affixing brackets and battens, and then unrolling the ridge roll and securing it with nails or staples. The next step is affixing the tiles using ridge unions and clamps.
Ridge unions are used in place of mortar, and they slide into place between the tiles. The tiles are then pushed flush against the unions. To secure the tiles, union clamps are attached, typically by clipping or screwing them into place as per the manufacturer's recommendations. It is important not to overtighten the screw clamps to avoid cracking. This process is repeated across the length of the ridge, ensuring a stop end is added where necessary.
By following these steps and properly securing the tiles with ridge unions and clamps, you can ensure a durable and secure roof that effectively protects your home from the elements.
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Secure tiles with nails and washers
Plastic roof tiles are a great option for those seeking a lightweight alternative to slates without compromising on the classic aesthetic. They are straightforward to install, and the fitting process is inexpensive. Before installing plastic roof tiles, it is important to adequately prepare the roof structure. The roof surface should be flat, smooth, clean, and free of debris.
Now, onto securing the tiles with nails and washers. This process can be done in several ways, depending on the type of ridge tile and your specific requirements. Here is a detailed guide:
Dry-Fix Ridge System
This method involves using a combination of nails, washers, and ridge unions to secure the tiles. First, roll out the ridge roll along the centre line of the ridge batten and secure it with staples or felt nails. Then, peel off the protective paper from the butyl tapes on both sides of the roll and press it firmly onto the tiles, ensuring continuous surface contact. Position a ridge-to-ridge seal under the open end of the first ridge tile and place the next tile over the seal. Put a ridge tile connector plate over the joint and push a plastic plug through the hole into the seal. Now, secure the tiles by nailing through the hole and into the ridge batten using the provided screw nails and washers. Ensure that the nails penetrate the ridge batten by a minimum of 40mm.
Using Ridge Unions
Ridge unions are another way to secure ridge tiles. Slide the union into place, push your tile flush with it, and then secure it with the recommended number of union clamps as per the manufacturer's instructions. Typically, these clamps will clip into place, with the top screw clamp being mechanically fixed. Be careful not to overtighten the screw clamp to avoid cracking.
Mortar-Bedded Tiles
While mortar-bedded tiles are more traditional, they can become brittle over time. If you choose to use this method, ensure that you follow local regulations, as some areas may require additional mechanical fixing. When installing mortar-bedded tiles, it is crucial to prepare the roof surface thoroughly by cleaning and inspecting for damage.
Other Methods
There are also other methods for securing ridge tiles, such as using plastic clips or screws. Plastic clips can be secured with nails hammered into plastic moulding, but this method may be less secure. Screws provide a more durable option, especially for end ridge tiles, as they can be drilled directly into the ridge, preventing them from blowing off.
Remember, it is important to refer to the manufacturer's instructions for specific guidelines and to plan ahead, checking the weather forecast before starting this project.
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Frequently asked questions
You will need a pry bar, a hammer, a tape measure, a spirit level, and a drill. You will also need a lead saddle, ridge unions, and union clamps.
There are two basic types of ridge tiles: half-round and angled (or angular). The type you choose will depend on the style of your home. If you have a flat tile or slate roof, for example, you will need a different type of tile than if you have a pitched roof.
First, inspect the roof surface to ensure it is flat, smooth, sound, clean, and clear of debris. Double-check that all sheathing joints are supported by framing and blocking, and that any specialist flashings are in place. Make sure the substrate is sloped and anchored to the framing. Clean interlocking areas to minimise moisture and make provisions for flashing and roof penetrations.
First, loosen the rafter with a pry bar and affix the brackets. Bend the brackets to the right height with a hammer, then attach the batten, making sure it's cut to the right length. Unroll the ridge roll and nail it into place, then peel off the tape from the butyl adhesive and press down. Finally, slide the ridge tiles into place and secure them with union clamps.
Ridge tiles typically last for around 40 years before they need to be replaced. However, if the mortar between the tiles degrades, water may ingress into your loft space, so it's important to keep an eye out for any cracks or broken tiles.
