Cover your home with confidence
Whether you’re working on a new build, a renovation or a quick repair, a solid roof is essential. At Pentagon, we offer a complete range of roofing materials, accessories and advice – all under one roof.
How roof design works
Roof design is more complex than it looks. It requires careful calculations to make sure every part is strong enough to handle the elements. Roofs must cope with powerful winds and heavy snow, all while supporting the weight of their coverings, usually tiles.
Tiles are fixed to battens, which are evenly spaced along the roof. Each batten is securely nailed wherever it crosses a rafter. Beneath the battens is a membrane or roofing felt. While there are different types, they all do the same essential job: stopping warm air inside the roof from meeting the cold underside of the tiles, which can cause condensation. They also keep out dust.
But one thing the membrane doesn’t do? Make the roof waterproof. That job lies with the tiles and the structure beneath.
Need a quote, order or guidance?
Whether you’re ready to place an order or just need a bit of support, we’re here to help.
Contact us today for pricing, product advice or practical next steps – whatever you need to move your project forward.
Which roof covering should I consider?
Natural Roof Slates
Natural Roof Slates are particularly suitable as a roof covering as they have an extremely low water absorption index of less than 0.4%. Its low tendency to absorb water also makes it very resistant to frost damage and breakage due to freezing.
Clay Plain tiles
Clay Plain tiles are a very traditional British idiom. The format is tiny in comparison to others, usually 165 x 265, and the fact that the usual amount of each tile which is visible is just 100mm means that the coverage is 60 tiles/m². And plain clay tiles also have to be laid at traditional roof pitches, more than 35°. They look good on steeply pitched roofs and are particularly good on small roof sections, such as on dormer windows or porches, where large format tiles would look out of place.
Concrete Interlocking Tiles
These tiles are much quicker to lay than traditional slates, or plain tiles, as they are generally of a larger format, typically 420 x 330mm and therefore need relatively few to cover a roof. The coverage rate is typically around 10 tiles/m². They can also be laid at very shallow pitches, some at as little as 14°.
Interlocking Pantiles
Interlocking Pantiles are often used in the Channel Islands, and it is essentially an earlier form of an interlocking tile, as are the traditional Spanish and Mediterranean roof tiles, which are sometimes used in Britain.