The attachment you want if you don’t have an attic, or want to avoid working in one. The Roof Tech RT-Mini 2 is a self-flashing base for asphalt & metal roof-top PV mounting systems. What makes it special is that it attaches to the roof deck. No more inter-rafter blocking in hot attics, or damaging rafters with lag screws. It’s designed to attach to conventional rail mounting systems so you can use the rails and L-feet you prefer, and accessories such as conduit support brackets. Great for vaulted ceiling cabin & house designs.
Updates to the RT-Mini 2…
- Less Aluminum
- Additional Mounting Options
- More Efficient Design
- Suitable for Metal, EPDM, TPO, & Asphalt Roofs
The RT-MINI 2 is Strong
Engineered to withstand wind speeds up to 180 mph and ground snow up to 90 psf. The main difference between RT-MINI and conventional flashing is the installation speed. It is fastened with wood screws, eliminating the need for pilot holes. As a result, there is no damage to the seal on asphalt shingles so the roof warranty remains intact.
RT-MINI is fully waterproof and certified by the ICC for Flexible Flashing. Stamped PE letters are available for 37 states in the U.S. and four provinces in Canada (and growing!).
RT-Butyl is Roof Tech s flexible flashing used in one million residential PV systems for the last 28 years. It is the first PV mounting system with Flexible Flashing certified by the ICC. Engineered to withstand wind speeds up to 180 mph and ground snow up to 90 psf.
The RT-MINI II is Fast
Spend less time on your attachments and rail set-up. Get the job done quickly, and reliably.
Width : 90mm (3.5″)
Length : 100mm (4″)
Height : 15.4mm (0.6″)
Top Platform : 50 x 100mm (2×4″)
See screw hole locations, and attachment bolt detail on the spec sheet…
Download the Spec Sheet
RT-Mini 2 Installation Notes…
The RT-Mini II can be installed either on rafters (we strongly recommend using inter-rafter blocking instead as a best-practice… see our block note), or attached directly to decking through the shingles.
For rafters/blocking attachment, use 90mm (3.5″) SS wood screws with neoprene sealing washer head.
For deck attachment, use 60mm (2.3″) SS wood screws with neoprene sealing washer head (see order form for the RT screw product).
RT-MINI II is suitable for all systems with a conventional L-Foot.
Use the RT Serrated Hex Flange Bolt/Nut:5/16-18 x 1” (see the order form)
or a 1/4” x 1” Carriage Bolt.
Metal roofs have a high thermal expansion and contraction factor. Screwing through a standing seam metal roof is not recommended and will also void the roof warranty. Exposed fastener metal roofs have a lesser impact from thermal expansion, however attention to the panel length is important. Consult with the metal roof manufacturer for solar roof attachment guidelines.