RT-PLUS

Mill or Black Finish

3/8" & 5/16" T-Bolt

AlphaSeal® Self-Flashing

Rafter or Deck

Roof Tech’s Rail-Based Base - RT-Plus

Roof Tech is proud to introduce the RT-PLUS® - an extruded aluminum PV rail mounting system featuring Roof Tech's industry-leading AlphaSeal® self-flashing system.

Designed for ultimate versatility and durability, our new mounting system can be fastened directly to rafters or decks (OSB and plywood only), ensuring a secure and efficient installation. Available in a sleek MIL finish or elegant black, both options come with slots for 3/8” or 5/16” T bolts, making it the ideal solution for your solar projects.

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At a glance

TYPE Rail-based mount base

Material Extruded aluminum

ROOF TYPES Metal · EPDM · TPO · SBS · Asphalt

SEALING Self-flashing AlphaSeal®

Attachment Rafter or deck (OSB/plywood)

Deck holes 5 round mounting holes

Rafter holes 2 square holes

Bolt slots 3/8" & 5/16" T-bolt

Finish Mill or Black

Overview

Roof Tech is proud to introduce RT-PLUS®, an extruded aluminum PV rail mounting system featuring Roof Tech's industry-leading AlphaSeal® self-flashing system.

Designed for ultimate versatility and durability, RT-PLUS® can be fastened directly to rafters or decks (OSB and plywood only), ensuring a secure and efficient installation. Available in a sleek mill finish or elegant black, both options come with slots for 3/8" or 5/16" T-bolts, making it the ideal solution for your solar projects.

Features & Benefits

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AlphaSeal® self-flashing system
No Caulking or Pre-Drilling Required
Universal Attachment to Any Slope
Metal, EPDM, TPO, SBS, & Asphalt compatible
5 Round mounting holes for deck attachment (OSB or Plywood)
2 Square holes for rafter attachment
Available in black and mill finishes
Rail mounting slot for 3/8” and 5/16” bolts

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Frequently Asked Questions About RT-Plus

What is RT-PLUS®?

RT-PLUS® is Roof Tech's extruded aluminum PV rail mounting system, featuring the company's industry-leading AlphaSeal® self-flashing technology.

What roof types is RT-PLUS® compatible with?

It's compatible with metal, EPDM, TPO, SBS, and asphalt roofs, and offers universal attachment to any slope.

Can RT-PLUS® be installed on rafters, deck, or both?

Both. It can be fastened directly to rafters or to decks (OSB and plywood only). It includes 2 square holes for rafter attachment and 5 round mounting holes for deck attachment.

What bolt sizes does it support?

RT-PLUS® has a rail mounting slot that fits both 3/8" and 5/16" T-bolts, sold as separate SKUs depending on which size your rail system uses.

What finish options are available?

It's available in a sleek mill finish or an elegant black finish.

Do I need caulk or pre-drilling to install it?

No, RT-PLUS® is designed so that no caulking or pre-drilling is required at the attachment points.

How is it sealed against leaks?

It includes Roof Tech's AlphaSeal® self-flashing system, the same waterproofing technology used across the RT product line.

Get your RT-PLUS® spec right before you order

RT-PLUS® ships in two finishes and two bolt-slot sizes, with separate hole patterns for rafter and deck attachment. Tell us your roof deck material and rail system, and we'll confirm the right configuration the first time.

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