SkyLift Roof Riser FAQs
What size beam and rafters do you use?
Your choice. Check with your local lumberyard or contractor for proper spans. The SK24-B is designed to handle any typical 4X beam. The heavy duty SK-24-HDB is available for 4X or 6X beams.
How does the bracket attach to the roof?
The bracket does not attach to the roof. It attaches through the roof and fastens to the exterior wall top plate using only Simpson Strong-tie SDS ¼ x 3” fasteners which are included with the bracket. See installation sheet.
What about seismic, wind shear or lateral movement?
The bracket is to be incorporated into a designed system. It is the responsibility of the installer to design and calculate. The SK-24-HD is engineered for seismic and lateral loads. The lighter bracket relies on the outline posts in combination with alternate bracing.
How does it seal at the roof?
Use a standard pipe jack flashing. We highly recommend the LifeTime Tool UPF 100% silicone flashing found in our store.
What about weather blowing through the opening?
The unique design creates a chimney effect, with the air pressure blowing up and out. It provides resistance from rain or inclement weather blowing in and removes pesky barbecue smoke.
Can you use pressure treated lumber?
Some treated wood may have excess surface chemicals making the wood dangerously corrosive. Accordingly, the product may not be used with pressure treated wood with a greater than .25 pcf. Comply with pressure treated manufacturer guidelines.
What type of roofing do you use?
The SK24-B is intended for trellis application or light weight poly-carbonate roof panels. Use the SK-24HDB with composition roofing products, high wind areas, heavy snow loads. For coastal conditions, the heavy duty, hot dipped, galvanized SK-24HD-GALV is recommended.
Are there other bracket heights or can the bracket be cut down?
The SK-24-B is 24” tall. 30” and 36” can be special ordered in the HD (heavy duty) versions. Yes, a bracket can be cut down by re-drilling a different, through bolt hole.