How Should I Store Insulation Slabs?

Keep Dry: Always store slabs in a dry, covered environment (warehouse, shed).Off the Ground: Use pallets or battens to elevate slabs, preventing ground moisture contact.Waterproof Cover: If stored outdoors, use a secure, waterproof tarpaulin, ensuring the entire stack is covered and allowing for some ventilation to prevent condensation.Original Packaging: Keep slabs in their original packaging for initial on-site protection.

Do Insulation Slabs Require A Vapour Control Layer (VCL), And How Does This Affect Condensation Risk?

In most applications, especially in external walls and roofs that separate heated indoor spaces from colder outdoor environments, yes, a vapour control layer (VCL) is generally required on the warm side of the insulation. While mineral wool slabs are vapour permeable (allowing water vapour to pass through), a VCL is crucial to: Prevent interstitial condensation: This occurs when warm, moist indoor air passes through the insulation and cools, causing water vapour to condense into liquid water within the wall or roof structure. This can lead to damp, mould, and degradation of materials.Improve airtightness: A continuous and well-sealed VCL also acts as an air barrier, preventing unwanted air leakage. Careful design and installation, ensuring the VCL is continuous and sealed at all junctions and penetrations, are critical to managing condensation risk.

What Do The Numbers Within The Insulation Slab Titles Mean?

Insulation labels often carry a number and that figure tells you the product’s thermal conductivity. A smaller value means the slab slows down heat loss more effectively.Take DriTherm 37: the “37” points to a conductivity of 0.037 W/mK, so it performs better than a product labelled 40 or 42.The “Dri” prefix signals a water-repellent additive in the fibres. By shedding moisture instead of soaking it up, the slab stays dry and keeps delivering its stated insulation level in walls prone to damp.

Insulation Slabs & Batts | Materials Market

125mm Knauf DriTherm Cavity Wall Insulation Slab 37 (3.28m2/Pack)

Insulation Slabs

125mm Knauf DriTherm Cavity Wall Insulation Slab 37 (3.28m2/Pack)

30mm Rockwool RW3 Acoustic Sound Insulation Slab (10.8m2/Pack)

40mm Rockwool RW3 Acoustic Sound Insulation Slab (7.2m2/Pack)

30mm Rockwool RW5 Acoustic Sound Insulation Slab (5.76m2/Pack)

Insulation Slabs 

Manufacturer

Edge

Material type

Thermal conductivity

Density

Fire rating

Width

Thickness

Related Articles

How to Insulate a Shed

Cavity Wall Insulation Installation

Timber Frame Construction

How To Insulate A Garage

How To Build a Shed

How and Where Is Rockwool Manufactured?

How To Soundproof A Floor

Insulation Installation Equipment - What Do I Need?

All Categories

Insulation Boards

Insulation Slabs

Insulation Rolls

Material Type

Applications

Insulation Accessories

Plasterboard

Insulated Plasterboard

Metal Studs & Ceilings

Bagged Products

Other Boards

Drylining Accessories

Treated Timber

Sheet Materials

CLS Timber

Planed Timber

Flooring

Cladding

Sand & Aggregates

Cements & Limes

Bricks & Blocks

Lintels

Builders Metalwork

Drainage

Site Supplies

Internal Doors

External Doors

Skirting & Architrave

Windows

Door Frames

Fencing

Decking

Landscaping

Driveways & Paving

Lead Flashing

Pitched Roofing

Flat Roofing

Fascias & Soffits

Guttering

Roofing Maintenance & Repairs

Plasterboard Fixings

Wood & Timber Screws

Fixings & Fasteners

Insulation Screws & Fixings

Nails & Anchors

Nuts, Bolts & Washers

Glues & Adhesives

Silicone & Sealants

Tapes

Foams & Fillers

Packs of Timber

Packs of Sheet Materials

Packs of Blocks

Loose Sand & Aggregates

Pallets of Cement

Pallets of Insulation