Low-E soft coat glass is a type of energy-efficient glazing. "Low-E" stands for "low emissivity," which means the glass has a microscopically thin, transparent coating that reflects heat.

This coating helps keep your home warm during the winter and cool during the summer, improving thermal insulation and reducing energy costs.

A ceramic border blocks UV rays, protecting the seals around the glass from damage and extending their lifespan. By preventing the UV rays from reaching the seals, the ceramic border helps keep them intact and functioning properly for a longer time.

Argon gas is a better insulator than air. It has a lower thermal conductivity, which means it slows down the transfer of heat through the window. This helps keep heat inside during the winter and outside during the summer, leading to more stable indoor temperatures.

It is the amount of light that can successfully pass through the glass without being reflected or absorbed. The higher the value, the more light that can pass through. The percentage value represents the percentage of the total amount of light that passes through the skylight and into your home.

The higher the value, the more sunlight passes through.

It is the ability of a skylight to return solar energy to the atmosphere, effectively keeping the heat out. The percentage value represents the percentage of the total amount of heat that gets reflected off the skylight.

The higher the percentage, the more heat it reflects off.

Thermal transmittance, also known as U-value, is a measure of heat loss through the structure. It is measured in W/m2K. The lower the value, the better the insulation.

The UK Building Regulations require a maximum of 2.2 W/m2K in existing dwellings and an average of 1.2 - 1.7 W/m2K for new dwellings on rooflights.

Self-cleaning glass has a glass coating that prevents water from adhering to the glass, allowing rainwater to pick up any dirt on the surface and remove it from the glass, making it easier to clean.

Yes, the Skyseal Roof Lantern can be custom made to your required sizes but may come with extra costs.

The Skyseal Laminated Roof Lantern is one of the UK's most thermally-efficient double-glazed lanterns. With a complete roof U-value of 1.25W/m2K, Skyseal provides your home with a room that’s comfortable all year round.

The Slimline Roof Lantern is custom-made to your exact sizes. We work from internal measurements and recommend your upstand is a minimum of 70mm wide and a minimum height of 25mm from roof level.

To calculate your required size, measure the length and width from the inside edge of your timber upstand.

The Slimline roof lantern is supplied flat pack for ease of handling and installation. The lantern is delivered in kit form and leaves the factory with all components checked and quality controlled. Your builder or installer will have a comprehensive installation guide with all dedicated parts required for a speedy installation.

Please view the file Skyseal Slimline Lantern Product Specification & Installation for the full installation guide.

Our Skyseal Slimline Lantern can be manufactured to any RAL colour. We offer three standard colours, some of which have extra costs for them. You can also specify different colours internally and externally.

• Matt Black (9005) - Standard Price
• Anthracite Grey (7016) - Extra cost
• Satin White (9010) - Extra cost

The Slimline Lantern is available in four glass tints: Clear, Solar Control, Blue Tint and Privacy. Please view the Skyseal Slimline Lantern Product Specification Guide for further details.

The Skyseal Slimline Roof Lantern is one of the UK's most thermally-efficient double-glazed lanterns. With a complete roof U-value of 1.0W/m2K, Skyseal provides your home with a room that’s comfortable all year round.

Yes, Skyseal Roof Lanterns are fully compliant to Part L Building regulations.

It is the amount of light that can successfully pass through the glass without being reflected or absorbed. The higher the value, the more light that can pass through. The percentage value represents the percentage of the total amount of light that passes through the skylight and into your home.

The higher the value, the more sunlight passes through.

It is the ability of a skylight to return solar energy to the atmosphere, effectively keeping the heat out. The percentage value represents the percentage of the total amount of heat that gets reflected off the skylight.

The higher the percentage, the more heat it reflects off.

Thermal transmittance, also known as U-value, is a measure of heat loss through the structure. It is measured in W/m2K. The lower the value, the better the insulation.

The UK Building Regulations require a maximum of 2.2 W/m2K in existing dwellings and an average of 1.2 - 1.7 W/m2K for new dwellings on rooflights.

On paper, Triple Skinned polycarbonate domes are the ideal choice for modern homes and can offer U-values as low as 0.6 W/m²K. However, opinion is divided on whether triple skin has any real thermal impact in the home. Quite often they do very little to reduce your utility bills and the initial costs far outweigh any savings.

It is the amount of light that can successfully pass through the glass without being reflected or absorbed. The higher the value, the more light that can pass through. The percentage value represents the percentage of the total amount of light that passes through the skylight and into your home.

The higher the value, the more sunlight passes through.

It is the ability of a skylight to return solar energy to the atmosphere, effectively keeping the heat out. The percentage value represents the percentage of the total amount of heat that gets reflected off the skylight.

The higher the percentage, the more heat it reflects off.

Thermal transmittance, also known as U-value, is a measure of heat loss through the structure. It is measured in W/m2K. The lower the value, the better the insulation.

The UK Building Regulations require a maximum of 2.2 W/m2K in existing dwellings and an average of 1.2 - 1.7 W/m2K for new dwellings on rooflights.