illbruck FA870 Premium Natural Stone Silicone
From: £14.62 inc. VAT
£12.18 ex. VAT
- Suitable For: natural stone and most construction materials
- Area of use: EXT & INT
- Application Method: geared cartridge gun
- Volume: 310ml
- Container Type: cartridge
- Colour: White, Transparent
- Brand: illbruck
- Manufactuer: illbruck
FA870 is a high-performance, one-component, low-slump silicone sealant developed specifically for sealing natural stone, with Tremco CPG guaranteeing no migratory staining. It is neutral curing, chemically non-corrosive, and provides a conventional finish with very low odour. FA870 contains fungicide to prevent mould growth, making it suitable for sanitary and swimming pool surround applications, and offers good resistance to UV light, ageing, and weathering. Its rapid-curing formulation skins within 10–20 minutes and is compatible with most construction materials. FA870 is classified as F-20HM according to ISO 11600, with further classifications available in the product table.
Key points
– High-performance silicone for natural stone, no staining
– Neutral curing, non-corrosive, skins in 10–20 minutes
– Fungicide for mould protection, suitable for sanitary and pool areas
– UV, ageing, and weathering resistant; compatible with most materials
Storage – Store in shaded dry conditions between +5°C and +25°C.
Shelf Life – 18 months when stored as recommended in original unopened container
For more in our range of natural stone sealants, please click here. For our full range of products from illbruck, please click here.
For more information on illbruck and their products, you can visit their website here.
Suitable for:
– Formulated for long-term elastic sealing of movement joints
– Suitable for natural stone: granite, slate, terrazzo, porphyry, limestone, travertine, sandstone, quartzite, marble, etc.
– Can be used with other construction materials: concrete, ceramics, metals, glass, PVC, and primed wood
– Ideal for joints where flexibility and durability are required
Preparation
– Always perform a compatibility test before use.
– Ensure surfaces are clean, dry, stable, and free from grease.
– For non-porous substrates, clean with AT200 and conduct a preliminary test.
– Remove loose particles from joints using a brush.
– For plastics and powder-coated surfaces, clean with AT115 and test for compatibility.
Priming
– FA870 adheres well to most surfaces; refer to the primer table for optimal results.
Joint Backing
– Use a backing rod beneath the joint to ensure the sealant bonds to only two surfaces.
Application
1. Apply sealant with a high-quality geared sealant gun for consistent extrusion. Cut the cartridge nozzle to the desired size.
2. Apply the sealant slightly proud of the final level, then spray with illbruck smoothing agent AA301.
3. Tool immediately using a jointing tool such as illbruck AA311.
Cleaning
– Clean tools and any sealant spillage immediately with AT200 Cleaner. Ensure surfaces are solvent-resistant before cleaning.
– Once cured, the sealant can only be removed mechanically.
Please Note
– Not suitable for substrates such as butyl rubber, neoprene, EPDM, or surfaces containing bitumen or tar.
– Contact with bituminous or tar-containing surfaces may cause discolouration and adhesion failure.
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| Elementlength | |||||||
| up to 1,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
|
| Type of window frame material |
Minimum witdth of joints for a butled mounting b in mm |
Minimum witdth of joints for a inner mounting b in mm |
|||||
| Hard PVC (white) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Hard PVC and PMMA (dark) (colour extruded) |
15 | 20 | 25 | 30 | 10 | 15 | 20 |
| Hard PUR integral foam | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Wood-aluminium-window | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (bright) |
10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (dark) |
10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Wooden window frame | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
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