Injection fixing - liquid dowel

Safe hold by liquid dowels

Injection fixing - liquid dowel: injection

Whether the new wall-hung toilet or the new vanity unit will remain on the wall depends on the right attachment. On standard or solid brick walls, standard dowels provide sufficient support. But Not every dowel works in every building material. So what should be done if the wall is made of hollow bricks? At the latest when the drill progresses only in "staccato", it becomes clear: This is a hollow building material with a hollow chamber. The masonry has holes like a Swiss cheese. There is no stopping for the ordinary dowel.

Injection fittings help

If you have to attach heavy objects such as a washbasin to such problem building materials, the do-it-yourselfer can resort to a professional solution: fischer offers so-called injection fixings on. In this method, a solidifying agent is filled in the hole stone. The screw or the threaded bolt are practically embedded in concrete. The fischer injection anchor FIP consists of a plastic anchor sleeve and a synthetic resin mortar, which sets particularly quickly. At the hardware store complete sanitary attachment sets with metal threaded anchor, anchor sleeve and collar nut are available.

How an injection attachment works

Injection fixing - liquid dowel: anchor

cutaway model

Drilling is done in the hole stone without impact. Because the blows of the rotary hammer or impact drill would break the thin webs inside the stone. Tip: For drilling use ground masonry drills. After drilling, the anchor sleeve is first pushed into the drilled hole and then pressed out with the mortar. Now the hanger bolt can be pushed into the anchor sleeve. This causes the screw to be centered in the borehole. After about 80 minutes curing time (at 20 degrees Celsius), the mortar anchorage is solid like stone.

Without anchor sleeve can be the injection anchorage also for particularly stable compounds in solid building materials like concrete, natural stone or solid bricks. In this case, the anchor sleeve is dispensed with and the hole is filled directly with synthetic resin mortar. Also in this case, the anchor part is pressed in directly after filling.

Injection fitting - step by step

Injection fixing - liquid dowel: fixing

Step 1

Step 1
Hohllochziegel need drilled "without a beat" not to destroy the bridges in the stone. Once the bridges have broken away, nothing stops at this point.

Injection fixing - liquid dowel: anchor

step 2

step 2
The Plastic anchor sleeve is pushed into the borehole.

Injection fixing - liquid dowel: anchor

step 3

step 3
The anchor sleeve is pressed out with the synthetic resin mortar. This can be a commercial extrusion gun be used.

Injection fixing - liquid dowel: fixing

Step 4

Step 4
Immediately after pressing the threaded anchor is pushed into the anchor sleeve and adjusted.

Injection fixing - liquid dowel: injection

Step 5

Step 5
The ready assembled sanitary mounting kit.

Tip:Excess mortar leaking out of the hole can be knocked off after curing with light hammer blows.

This topic has been developed for you by lets-rebuild.com in cooperation with Fischerwerke.

All pictures: © fischerwerke

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