The Mardome Trade Dome Rooflight Polycarbonate comes in a range of sizes. It is a multifunctional, low-rise polycarbonate dome built to be aerodynamic. This product has an extensive collection of sizes and options to meet any demand with a selection of finishes and glazing variations.
Measuring & Installation Guide
Available in standard sizes from 450x450mm up to 2400x1800mm in 150mm increments. If your size is not listed then please contact us to discuss your options.
As an example, if fitting on a builder’s upstand, the width should be 75mm and height of the upstand should be 150mm high. If you purchase a 900mm by 900mm from the drop down menu on our website your external timber size as shown in red above (Measure here) should be 900mm by 900mm. To use an example, if attaching on a builder’s upstand, the width should be 75mm and height of the upstand should be 150mm high. If you purchase a 900mm by 900mm then the external timber size as shown in red above should be 900mm by 900mm. There is a drop-down feature on our website to aid your selection of these. In this example your external timber size as shown in red above (Measure here) should be 900mm by 900mm.
Measuring Guide for domes with PVC kerb
Measure internal roof opening Acceptable tolerance = dome size +20/-30mm
To use an example, if buying with a 150mm or 300mm high upstand and you purchase a 900mm by 900mm then your structural opening size as shown in red above should be 900mm by 900mm. There is a drop-down feature on our website to aid your selection of these. In this example your structural opening size as shown in red above (Measure here) should be 900mm by 900mm.
*Centre pane U-value is a measure of the thermal efficiency of the glazing type. #Ud-value is a measure of the thermal efficiency of the whole rooflight (calculated in accordance with NARM Technical Document NTD2). ~Glass glazing option is not available with the access hatch option and limits other opening options depending on size Part L Building Regulations require a U-value of at least 2.2W/m2K: Brett Martin Daylight Systems recommend the use of at least triple skin rooflights in all applications
Polycarbonate rooflight light transmission properties are highlighted in the table underneath:
Clear – high visibility Maximum light generation Optimum clarity of vision and transparency of views and objects through the dome Opal – diffused light and solar control Maximum levels of diffused light generation joined with privacy Restricts solar glare and subtracts solar heat gain Impairs vision of optics and materials through the product Patterned – privacy Marries privacy with high levels of light processing Less significant daylight Repels sights of views and objects through the dome Bronze – solar control Minimizes solar glare and heat gain Offers a lower light transmission
Builders upstand (opening / vented) Dome is supplied complete with uPVC frame that fixes to top of builders upstand and houses any opening / ventilation equipment
150mm uPVC For mounting at roof surface level, providing 150mm of waterproofing height (exact kerb profile varies with specification)
300mm uPVC For mounting typically below roof surface level, providing 300mm of height for insulation and waterproofing
Trickle Vents 2 manually operated hit and miss trickle vents providing combined 8400mm² equivalent area ventilation. Please note trickle vents cannot be supplied with 450mm by 450mm size.
Please note that the transport company is not responsible for delivering inside the property. They are not insured to do this so you will need to ensure an appropriate person is designated and on site to offload the product out of the vehicle once the driver arrives.
I am the owner of Top loft company ltd, after reviewing reviews from various companies I ordered 2 juliet balconies from tgs arrived within 3 weeks, comunications and help was brilliant.
Thanks for all your help.
Great service from the team. Easy to order, good buying guidance and clear install instructions for my builder. Rooflights look absolutely great!
The team at TGS couldn't have been more helpful in organising a smaller delivery vehicle to help with restricted access.
Highly recommend TGS.
Great service from a very knowledgeable company. Thanks team Toughened Glass Systems.
I was spending a lot of money on several rooflights so I wanted to make sure I got it right and I did. The professionalism, expertise and the quality of the roof lanterns really set Toughened Glass Systems apart.
There are no complaints about the experience with TGS. The entire process of ordering, supplying and delivering was flawless. I would really recommend you order your flat roof sky lanterns from these guys.
Best place for rooflights, they supply many different types and options. Thanks for all your support Toughened Glass Systems!
The glass balustrade gives us an amazing view onto the lake outside. So happy we ended up going for the frameless glass balcony from Toughened Glass Systems instead of one with posts
My job is to design the interiors for a lot of houses and a lot of times the hardest part was when the client wanted some really inexpensive rooflights that should look like some contemporary ones as well. That until I found Toughened Glass Systems and started working with them more and more. They have a lot of this kind of stuff at a very decent price, a price for anyone I can say.
If you’re looking for cheap skylights for flat roofs or any types of roof lights, they probably have something for you.
Always kept us up to date with our order even when delayed by a few days. Great service from the start and good quality glass balcony delivered.