Dacasock FIRESOCK – FIRE RATED

Fire socks are a widely used, practical on-site solution to close voids at junctions. Designed to prevent fire penetration, aid reduction of sound transmission and help maintain the thermal integrity of the insulation requirements under building regulations in masonry, block and brick, timber frame and steel cavity wall structures.

The Dacatie Standard Firesock is a 1.2 m length of semi rigid mineral wool slab fully encapsulated in a recycled polythene printed sleeve, supplied winged.

All Dacatie Fire Multi Socks are manufactured in the UK by MDL Insulations Ltd and consist of stone wool slab which has a fire classification of Euroclass A1 tested to BSEN13501-1. The Rock Slab is encapsulated in recycled polythene sleeves and will not add to the propagation of fire.

The correct use of MDL Multi Cavity Fire socks will provide in excess of the 30 minutes “Provision of fire cavity barriers” as defined in Approved Document B of the Building Regulations.

Dacasock fire socks are available from 40mm cavity to 300mm cavity and can be used around all apertures as well as at party wall junctions, wall plates, and floor levels in all cavities.

It is the responsibility of the specifier to ensure the suitability of the product for the application intended.

Sizes & Order Codes (1.2 m length)

Product Code	Actual Size (for compression fit)	To suit cavity width	No / Pack	Packs / Pallet	Bag Colour
MDK50-STD	65×65 mm	40 – 50 mm	40	15	Red
MDK65-STD	75×75 mm	51 – 65 mm	30	15	Blue
MDK75-STD	85×85 mm	66 – 75 mm	25	15	Pink
MDK90-STD	100×86 mm	76 – 90 mm	20	15	Purple
MDK100-STD	110×86 mm	91 – 100 mm	20	14	Green
MDK110-STD	120×86 mm	101 – 120 mm	15	15	White
MDK120-STD	130×86 mm	111 – 120 mm	15	15	White
MDK130-STD	140×86 mm	121 – 130 mm	15	15	Brown
MDK140-STD	150×86 mm	131 – 140 mm	15	15	Red
MDK150-STD	160×100 mm	141 – 150 mm	12	15	Yellow
MDK160-STD	170×120 mm	151 – 160 mm	12	13	Grey
MDK170-STD	180×120 mm	161 – 170 mm	12	12	Grey
MDK180-STD	190×120 mm	171 – 180 mm	5	24	Purple
MDK190-STD	200×120 mm	181 – 190 mm	6	18	Purple
MDK200-STD	220×120 mm	191 – 200 mm	5	20	Purple
MDK210-STD	230×150 mm	201 – 210 mm	4	18	Purple
MDK220-STD	240×150 mm	211 – 220 mm	4	18	Purple
MDK230-STD	250×150 mm	221 – 230 mm	4	18	Pink
MDK240-STD	260×150 mm	231 – 240 mm	4	16	Pink
MDK250-STD	270×150 mm	241 – 250 mm	4	16	Pink
MDK260-STD	280×150 mm	251 – 260 mm	4	16	Pink
MDK270-STD	300×150 mm	261 – 270 mm	4	15	Blue
MDK280-STD	310×150 mm	271 – 280 mm	4	14	Red
MDK290-STD	320×150 mm	281 – 290 mm	4	14	Red
MDK300-STD	330×150 mm	291 – 300 mm	4	14	Red

For quotations, product information or technical support please call us on 01773 590100 or email sales@subframes-uk.com.

FAQs

What is a fire sock?

A fire sock is a cavity barrier that closes voids at junctions in a cavity wall. It restricts the spread of fire and helps maintain the performance of the surrounding insulation.

How do I choose the right fire sock size?

Match the sock to the cavity width. Each sock measures larger than the cavity so it compresses into place for a tight fit. The order code table lists the size to use for each cavity width.

What is the difference between a fire sock and a cavity closer?

A standard cavity closer seals the cavity at an opening to prevent thermal bridging. A fire sock is a cavity barrier that restricts the spread of fire at junctions. Many specifications use both.

Can Dacasock fire socks be used in timber frame construction?

Yes. Dacasock fire socks suit masonry, brick and block, steel frame and timber frame cavity walls. They fit around openings and at junctions such as party walls, wall plates and floor levels.

What fire rating do Dacasock fire socks provide?

Used correctly, the socks provide more than 30 minutes of fire cavity barrier protection under Approved Document B. The stone wool carries a Euroclass A1 classification tested to BS EN 13501-1.