Installation accessories · Tape
3T INSU-TAPE Aluminium Tape
- Width
- 50 / 63 mm
- Length
- 45 m
- Service temp.
- -20 – 120 °C
Questions to ask before buying insulation
In short
Before buying insulation, answer seven things: what it must do and where it goes, site temperature and humidity, dimensions and area, the project's fire and safety requirements, documents needed, installation method and accessories, and delivery and pack sizes. These details let you choose the right product, thickness and quantity, and avoid ordering the wrong item or too little.
1. What must the insulation do, and where?
- What problem are you solving: heat, sound passing through, echo, dripping, fire or high temperature? (See Where to start when choosing insulation)
- Location: roof, ceiling, wall, floor, pipe, duct or equipment
- New building or renovation — renovations often have limits on space and access
- Indoors or outdoors; exposed to sun, rain or knocks?
2. Temperature and humidity
- Pipes and equipment: the temperature of the fluid or surface, both normal and maximum; it must be within the manufacturer's service temperature range
- Cold surfaces: the temperature and humidity of the surrounding air are used to assess the risk of condensation. The thickness needed depends on these conditions; no single thickness suits every job
- Damp or wet areas: is a jacket or vapour barrier needed?
3. Dimensions and area
- Roofs, ceilings, walls: area (m²), framing spacing and the depth of the cavity or space available for insulation
- Pipes: pipe size (nominal size or outside diameter), length, number of bends, valves and fittings
- Ducts: cross-section and length; external wrap or internal liner?
- Roll and board sizes differ by product; send us the area and drawings and we can help calculate quantities
4. Project fire and safety requirements
- Do the drawings or specifications set fire requirements, and who set them?
- Keep a material's reaction to fire (e.g. its classification to EN 13501-1 or ASTM E84) separate from the fire resistance of a system, which is the result of a complete, tested installation. See Fire performance terms
- Fire-protection systems, high-temperature work and electrical work should be specified and checked by the designer or qualified professionals
5. Documents needed
- Datasheet — technical values with their test conditions and standards
- Test reports or certificates — if the project requires them, such as fire tests, tested sound-insulating wall systems or product standards
- The manufacturer's installation guide
- Safety data sheet (SDS) if the site supervisor asks for it
- Check that the product, thickness and facing in the documents match what you will order
Document values have conditions
A λ value is measured at a stated temperature, an R-value belongs to a stated thickness, and an STC / Rw belongs to the wall system that was tested. Always read the conditions, and never apply a system value to a single material.
6. Installation method and accessories
- Who will install it, and can they follow the manufacturer's method?
- Accessories used with it, such as aluminium foil tape for foil-faced joints, adhesive for duct insulation or insulation pins. See Accessories
- Points to watch: joints, edges, penetrations and pipe supports. See Gaps and compression
- Personal protective equipment for installers; work at height needs fall protection
7. Delivery and pack sizes
- Is it sold by roll, board, section or carton, and how much per unit?
- When is it needed, where is it delivered, can a truck reach the site?
- Is there dry, covered storage before installation?
- One delivery or phased deliveries?
Quick checklist
| Topic | What to prepare |
|---|---|
| --- | --- |
| Application | Problem, location, indoor/outdoor |
| Site conditions | Surface temperature, air temperature and humidity |
| Dimensions | Area, cavity depth, pipe/duct size, length |
| Fire and safety | Requirements in the drawings, who set them |
| Documents | Datasheet, test reports, installation guide, SDS |
| Installation | Installer, accessories |
| Delivery | Quantity, date, place, storage |
Sources
- EN 13501-1 — Fire classification of construction products and building elements: reaction to fire
- ASTM E84 — Standard Test Method for Surface Burning Characteristics of Building Materials
- Building Science Corporation — Info-501: Installation of Cavity Insulation
- ROCKWOOL — Safe 'n' Silent Pro data sheet
- SCG — SCG Cylence ZoundBlock installation guide
Related products
Categories and example products for this topic
Building thermal insulationSound insulationSound absorptionDuct and HVAC insulationPipe insulationIndustrial and high-temperature insulationFire protectionInstallation accessories
- INSU-TAPE Aluminium Tape — Order with foil-faced insulation: joint-sealing foil tape, in two widths
- INSU-BOND FiberTight — Water-based adhesive for glass or stone wool on ducts; plan quantity at 7.5 m²/kg
- ASAWA PIN — Insulation pins come in several lengths - match them to the insulation thickness you order
Installation accessories · Adhesive
3T INSU-BOND FiberTight
- Service temp.
- -15 – 90 °C
- Coverage
- 7.5 m²/kg
- Pack
- 10 kg
