When time on site matters, precision-engineered systems make all the difference. Atlas roof lanterns are designed not only for exceptional aesthetics and outstanding thermal performance, but also for fast, efficient installation. With pre-fitted components, slim but robust aluminium profiles, and installer-friendly engineering, an Atlas lantern can be assembled and secured in as little as 10 minutes, without compromising strength, security, or weather performance.
This guide walks you through the full installation process, providing clear steps, best practice advice, and technical notes that ensure every lantern you fit delivers the clean, sleek finish Atlas is known for.
1. Prepare the base
Apply a generous bead of silicone to the top of the lantern curb upstand. This ensures a continuous, weather-tight seal beneath the ring beam and contributes to long-term performance.
2. Prepare the Atlas ring beams
The next step is to mark and pre-drill all of the ring beams 100mm from the ends and at approximately 500mm centres.
Silicone the mitred ends of the ring beam before connecting the other ring beams.
Slide the ring beam with the pre-fitted corner cleats into the adjacent ring beam, continued to connect other ring beams in a similar manner.
3. Build the ring beam
Once the mitres are securely pushed tight together, fix the 4.2 by 25mm screws into the pre-drilled holes on the ring beam. When all corners have been completed, fix the ring beam to the curb upstand and continue the fixing process around all the ring beams.
Slide the hip rafters over the pre-fitted hip bracket on the ridge.
The bracket slides onto the internal shortest side of the hip rafter and will fit snugly.
Continue to do this on all hip rafters. Once the main frame of the ridge and hips has been constructed, lift into position while making sure all four hips are tight into the corners of the ring beam.
Make sure joints are tight against the ridge and fixed down through the rafter at approximately 25mm from the internal short side with a 4.2 by 25mm screw.
Fix the hips into the ring beam using the 4.2 by 25mm screws provided, fixing it on either side of the rafter and continue to fix all four corners. This will bring all four corners in tightly – in a perfectly aligned shape.
4. Prepare for glazing
Fit the ring beam glazing support trim – make sure that the trim is tight against the hip and then push down on the trim to clip it on.
Before glazing, remove the protective strip from the security tape on all four ring beams.
5. Glazing the roof lantern
Lift the glass, including the end close,r into place, pushing the glass tight against the ridge so it can fit in behind the hip rafter end closers continue to fit the other units in the same manner. Remember to always check glass labels for instructions on which side faces into the room so the self-cleaning glass is on the outside.
6. Fit the pressure plates
Fit the ridge pressure plates by centralising them on the Ridge and screw down using the 4.2 by 45mm screws provided. Once the pressure plate has been fixed, clip on the ridge top cap by applying downward pressure along its length.
Centre the hip pressure plates over the hip rafter and screw down through the pre-drilled holes. Continue to do this on all hips, making surethe pressure plate gasket is compressed against the glass.
Once the pressure plates are fixed, set the cover caps onto the pressure plates and push down to clip on. Continue this process on all the rafters to complete the assembly, and you will have completed a solid and sturdy roof lantern in around 10 minutes.
Atlas roof systems are strong, durable and wind tested to 3.5KN/m² so your customer can have peace of mind that their roof lantern is safely, securely and speedily installed.
Final Checks
- Ensure all joints are tight and flush.
- Verify that all gaskets are compressed correctly.
- Confirm silicone seals are continuous and smooth.
- Wipe down profiles and glass for a pristine handover.
Performance You Can Trust
Atlas roof systems are engineered to perform in the toughest environments. Every lantern is designed for strength, durability and long-term reliability, wind tested to 3.5kN/m² for complete peace of mind.
For installers, this means fewer callbacks, faster project turnover, and a sleek, design-led finish your customers will love.
Need More Support?
From order to aftercare, Atlas is here to help. Explore more installation guides, product specifications, and design inspiration in our Advice Centre, or speak to our team for technical support.
