This section tries to cover all of the questions that you might have about why you should consider using the CAST Rooflight.
If you have any other questions we will be pleased to assist.
Please do not hesitate to contact our customer service team on 01428 643393.
| Like a Velux do I need a flashing kit? |
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CAST rooflights are traditional building products. We would always suggest the use of flashing and recommend that you take professional advice. After all every roof is different. |
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| How is your rooflight different from other traditional looking rooflights? |
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Our rooflights differ in five main ways:
- We offer 3 rooflight depths to ensure you get the right fit.
- The thermal barrier between the opening and the closing leaf assists with insulation.
- The CAST rooflight also has glass units which are filled with argon gas drastically cutting carbon emissions.
- The very latest glass units feature warm edge technology, this improvement prevents a great deal of heat escaping through the sealant and the spacer bar. All of our glass units are constructed using this advanced process.
- Finally to assist with maintenance we coat the top surface of each glass unit with “Rain Racer”™, self cleaning glass solution keeping the glass brighter for longer.
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| Do you make your own rooflights? |
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Yes we do, and to the very best quality, both of our factories are registered to ISO 9001. In manufacturing our own rooflights we benefit from significant advantages. For example our product development is easier to implement and we are always striving to improve the performance of our rooflights as illustrated by the recent introduction a thermal barrier and the thermally broken ‘T’ section glazing bar. |
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| How can I buy the highest performing conservation rooflight at the very best price? |
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Ring us on 01428 643393 and speak to the manufacturers direct, we don’t deal with middle men, who have already added on their profit. So we can pass these cost saving on to our customers. |
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| I want a CAST rooflight but I don’t do DIY, how can it be installed? |
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We manufacture the CAST rooflight as supply only product, we do not fit. It is a very specialist job, so speak with a chartered builder or chartered surveyor for advice before doing anything. A risk assessment maybe necessary. We can not recommend an installer but list below two individuals who have installed our rooflights for other clients around the UK.
Graham from Gloucester: 01454 269000
Matthew from Scotland: 0845 6015786
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| Part L of the building regulations, and ‘U’ values how has it all come about? |
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At the CAST rooflight we applaud the government’s objectives to reduce carbon emissions. We now know for certain how harmful these “greenhouse gasses” are to the environment. The revised Part L is one of the package of measures to bring the UK into line with its “Kyoto Accord” agreements. A ‘U’ value is a way of measuring heat loss. The lower the ‘U’ value the lower the amount of heat loss. |
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| The CAST rooflight does it comply with the new regulations? |
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Yes it does, the glass that we use has a ‘U’ value of 1.0 W/m²K |
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| What about condensation - possible but increasingly unlikely? |
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The thermal efficiency of the argon gas filled double glazed units of the CAST rooflight combined with the thermal barrier and thermally broken ‘T’ glazing bar which come as standard with our rooflights make condensation problems virtually a thing of the past.
Condensation is the water which results from the conversion of water vapour in the atmosphere. The air which surrounds us in our homes always contains water vapour, which is usually invisible. The warmer the air, the more water vapour it can hold but there is a limit to the amount it can hold for a given temperature. When saturated air comes into contact with a surface which is at a lower temperature, the air is chilled at the point of contact and sheds its surplus water vapour on that surface.
Please ensure that the entire installation is in accordance with our instructions.
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| I have got a slate roof does the rooflight need to be different? |
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Yes that why we have two profiles for our rooflights, unlike Velux or Lumen. One for slate the other for deeper roof finishes such as clay tiles. We are the only company to offer this option and it ensures that the rooflight sit flush with the roofline. |
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| Can I have a purpose made rooflight? |
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No problem and choose your own colour if you want, it doesn’t have to be Henry Ford black. |
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