Do not use a water-blaster as this will remove a layer of the UV cap and reduce the life expectancy of the product.
- they can damage the UV cap layer
- people often try to stick the side lap together, which prevents the sheets from expanding and contracting.
The life of sealant is short compared to the life you get from polycarbonate sheets. If you use flashings and back channel tape instead, you will ensure your work is watertight.
If you must use a sealant, ensure it is a 100% neutral cure sealant suitable for polycarbonate.
Sheet length required is 2.4 (2400mm), effective cover with side laps allowed is 0.76m.
Your calculation would be worked out as follows:
4m / 0.76mm = 5.26 sheets
Rounding up to whole sheets, you will need 6 @ 2.4m to complete your roof.
It is commonly used in warehouses, factories, sheds, workshops and other large roof areas where natural daylight can help reduce reliance on artificial lighting.
Topglass® is available in different configurations for applications requiring general daylighting, solar control, fire performance, impact resistance and other performance characteristics.
Topglass® GC uses a premium gelcoat weathering system designed to provide improved resistance to UV exposure, weathering and corrosive environments.
The appropriate product depends on the performance requirements and environmental conditions of the project.
It provides a softer, more diffused light than a conventional clear or lightly tinted roof light and can be considered for commercial, industrial, retail, nursery and sporting applications where daylight, glare and heat build-up all need to be considered.
Ultra-Safe has been independently tested and certified for trafficable applications, making it suitable for general roof maintenance access, including maintenance of solar panels and HVAC systems, when installed and used in accordance with the applicable product requirements.
It incorporates a specially formulated fire-retardant resin system to provide improved fire performance and smoke reduction while still providing natural daylight through the roof.
FR50 should be specified according to the fire engineering and compliance requirements of the particular building or project.
It is particularly suited to commercial and industrial buildings where thermal performance and indoor comfort are important.
The appropriate system depends on the surrounding roof construction, insulation requirements and desired level of natural daylight.
It can be considered for chemical plants, wastewater facilities, coastal sites, agricultural buildings, animal sheds and other aggressive environments.
Because it does not rely on a metal substrate, it can provide an alternative where corrosion may reduce the service life of conventional metal roofing or cladding.
The existing roof profile should be correctly identified before ordering. Similar-looking profiles can have different rib spacing and dimensions, so selecting the correct profile is important to ensure proper alignment, laps and sealing.
The roof light must also correctly match the surrounding metal roof profile.
Using the correct components helps the system seal properly and reduces the risk of problems around fixings, laps and support points.
Always follow the current Laserlite installation instructions for the specific product.
Standard translucent fibreglass roofing should not generally be treated as a walking surface. Where roof access is required, appropriate safety mesh, walkways and fall-protection measures should be incorporated as required.
Always check the current installation instructions and applicable site safety requirements before commencing work.
They can be particularly useful where the roofing system, profile or installation conditions require additional protection.
The correct product and installation method should be confirmed against the current Laserlite installation instructions for the specific fibreglass sheet and roof system.
Use the correct profile, approved fixings, washers, seals and accessories, and ensure side and end laps are installed correctly. Purlin strips or tape should be used where required by the installation system.
Avoid over-tightening fixings, which can damage the sheet or sealing washer. Regularly inspect roof laps, fixings and penetrations as part of routine roof maintenance.
Always follow the current Laserlite installation instructions for the specific product and profile.
The warranty ranges from 10 years for Topglass® up to 25 years for Topglass® GC for applicable products.
Warranty conditions apply, including correct installation and maintenance. Always refer to the current Laserlite warranty documentation for the specific product being specified.
Topglass® GC Ultra-Safe has been specifically designed, tested and certified for trafficable applications. If any other product has been installed, roof access should be planned using appropriate walkways, access systems and fall-protection measures rather than by walking directly on the fibreglass sheets.
Standard Topglass® sheets should not be used as stepping points. Depending on the roof and work being carried out, a suitable walkway or purpose-designed access system may be required to keep loads off the fibreglass sheeting.
Before maintenance begins, confirm which Topglass® product is installed and check the condition of the sheets, fixings, supports and any safety mesh.
This enables general roof maintenance access, including maintenance of solar panels and HVAC systems, when the product is installed and used within its specified conditions.
As with all building materials, age, environmental exposure, damage and maintenance history can affect performance. Regular maintenance access should therefore follow the applicable product requirements and site safety procedures.
If Topglass® GC Ultra-Safe was installed, has been appropriately maintained and is less than 20 years old, it should be suitable for trafficable maintenance access within its specified application.
However, different environmental factors, both external and internal, can affect the condition and performance of building materials. The condition of the sheets, fixings, supports and any safety mesh should therefore be assessed before access.
Where there is any doubt, have the roof assessed by a competent roofing professional.
Topglass® is a range of fibreglass roofing and roof lighting products designed for specific performance requirements, including weathering, solar control, fire performance and trafficable maintenance applications.
When comparing products, consider the specific performance requirements of the building rather than simply comparing appearance or price.
If specifically long sheet lengths are required, confirm the available options and any applicable charges at the time of quotation. For example, the freight requirements.
Contact Laserlite or your local roofing/building materials supplier for assistance in locating the appropriate product and supplier.
Your calculation would be worked out like this:
4m ÷ 0.76m = 5.26 sheets
Rounding up to whole sheets, you would need 6 sheets at 2.4m length.
For each 2.4m sheet allow 7 fasteners, then multiply by 6 sheets to cover the area = 100.8 (2.4 x 7 x 6 = 100.8). Round up to the next whole number, so you require 101 fasteners*.
*Note: fasteners come in different pack or jar sizes, so you will need to check with your retail store.
