Conservation Rooflights - FAQs

Q. How do your rooflights compare with competitor's products?

A.The Clement Conservation Rooflight is superb in every way:

  1. Clement Conservation Rooflights are available in different profiles to suit your roof type, ensuring a perfectly flush finish is achieved.
  2. Our rooflights come as insulated glass units, argon gas filled, with integral weather stripping as standard, achieving unbeatable thermal performance.
  3. Handmade to ISO 9001 in our own factory, each rooflight is made by skilled workers who have many years’ experience working with steel and glass.
  4. Self-cleaning glass is supplied as standard.
  5. Our rooflights look stunning and will add character to your home, both internally and externally.

Q. Where can I find a rooflights brochure?

A. You can either follow this link to order a copy to be sent by post or to see a digital version or alternatively call us and we will arrange a copy to be posted to you.

Q. How do I order my rooflight?

A. Call us now on 01428 643393 or send an email to We pride ourselves on fantastic product knowledge, great customer service and competitive prices.

Q. How long after ordering will delivery take place?

A. Delivery is generally between 3 and 5 working days, however if you require your rooflights to be delivered quicker we can usually arrange this for you.

Q. What roof pitches are your rooflights suitable for?

A. Our rooflights have been tested at roof pitches between 20-70°. If your roof pitch does not fall into this range, please contact us and we will advise you on the best option.

Q. I have a slate roof. Does my rooflight need to be different?

A. Yes and that is why our rooflight range is perfect for you. We have designed a rooflight specifically for a slate roof type, in order to ensure a perfectly flush finish.

We also manufacture rooflights for tile roof profiles.

Q. Can your rooflights be installed next to each other?

A. Yes, as long as you have supporting rafters, our rooflights can be positioned next to each other.

Q. Can I install your rooflights in a marine environment?

A. No. We do not recommend our rooflights for marine environments within five miles of the coast. If in doubt, please contact us on 01428 643393.

Q. Who can install my rooflight?

A. The Clement Conservation Rooflight is a supply only product.

Installing any rooflight is a specialist job, so it is important that you consult a Chartered Builder or Surveyor before undertaking the project.  Detailed Installation Instructions come with every rooflight.

We cannot recommend installers; however, the following company have experience of installing our products:

A&J Building/Roofing (South East) 01428 604658

Q. Will I need a flashing kit?

A. We would always suggest that you consult your roofer, because every roof is different. As a general guide, we recommend you use a Code 5 (450mm) lead flashing for bottom apron and a Code 3 (225mm) for the top apron and lead soakers.

Q. What about condensation?

A. Condensation is very unlikely, due to the thermal efficiency of the argon gas filled insulated glass units, combined with the thermal shield and thermally broken ‘T’ glazing bar, which comes as standard.

Please ensure that installation takes place in accordance with the Installation Instructions provided and Part ‘F’ of the Building Regulations.

Q. What if none of the standard rooflights are the right size for my project?

A. Clement also manufacture bespoke rooflights. If a standard size doesn’t fit, please get in touch with us to discuss your individual requirements.

Q. How do I take care of my rooflight?

A. The following should be carried out on a regular basis:

  1. Open and shut the rooflight.
  2. Clean down the paint surface at least twice a year using warm water and a drop of washing up liquid. Please note that polluted environments will require more intensive maintenance.
  3. Keep the weather stripping clean by removing all grime.
  4. Ensure the working parts remain dust free and are regularly lubricated.
  5. If you plan to install the rooflight in a marine environment, please contact us on 01428 643393.

Q. Do you provide a warranty for rooflights?

A. We offer a 10 year warranty on the paint surface, a 5 year warranty for glass unit failure and a 1 year warranty for fittings.

In the event of a problem occurring, please contact us within 48 hours.

Please read our Terms & Conditions thoroughly. A copy is available upon request.