Fastenings

About Fastenings

Fastenings are the anchoring and bonding components that secure glass adaptors, canopy brackets, railing posts and other architectural hardware to the building structure.

They transfer the load from the visible hardware into the substrate — concrete, masonry, insulated façades or timber frames — and are selected to match both the fastener type required by the hardware and the wall construction at the installation site.

Strofix supplies fastenings in two subcategories: chemistry and adhesives (anaerobic glue and chemical anchor-mass) and anchors and screws (steel anchors in lengths from 150 to 400 mm, anchor sleeves, spacers, screws, cup nuts, washers, double threads and pre-matched screw-and-fastener sets for glass canopies).

Materials include AISI 304 stainless steel and S235 structural steel, with canopy fastener sets configured for three façade types — masonry without insulation, masonry with insulation and timber-frame construction.

The correct fastening depends on wall type, hardware product, bolt size and required embedment depth.

How to choose a fastening

1. Wall / façade type

This is the most decisive factor.

Masonry without insulation, masonry with an insulation layer and timber-frame construction each require different anchor types, embedment depths and load-transfer mechanisms.

Strofix canopy screw-and-fastener sets are pre-configured for all three façade types — select the set that matches the actual wall build-up at the installation site.

2. Hardware product being installed

Each Strofix product category — glass adaptors, canopy brackets, railing posts, French balcony holders — specifies the bolt size (M8, M10 or M12) and fixing method it requires.

Identify the hardware first, then select the matching anchor, screw or fastener set.

Canopy fastener sets are available sized for 1, 2, 3 or 4 canopy bracket points.

3. Anchor type: mechanical or chemical

Steel anchors (S235 or AISI 304) provide mechanical expansion grip in solid substrates such as concrete and dense masonry.

Chemical anchor-mass is used where the substrate is hollow, lightweight or where higher pull-out resistance is needed — the resin bonds the threaded rod into the drilled hole.

A winter-grade chemical anchor-mass is available for installations at low ambient temperatures.

4. Material: AISI 304 or S235

AISI 304 stainless-steel anchors, screws and small parts (cup nuts, washers, anchor sleeves) are suited to exposed or exterior installations where corrosion resistance matters.

S235 structural-steel anchors are a cost-effective choice for concealed fixings embedded in concrete or masonry where the anchor is not exposed to weather.

5. Bonding: anaerobic glue

Anaerobic glue is used to permanently bond stainless-steel parts — for example, locking a threaded connection or securing a cover cap.

It cures in the absence of air between close-fitting metal surfaces.

Use it as a secondary locking method alongside mechanical fastening where vibration or thermal cycling could loosen threaded joints.