Product Overview
The PHS Apollo 2 Internal Vapour Control Membrane is a high-performance solution designed to create an airtight building envelope, reduce drafts, prevent heat loss, and minimize condensation build-up within the building envelope. With a fixed vapour resistance level of Sd 27m, it provides optimal vapour control for roof, wall, ceiling, floor, and loft constructions, making it suitable for all internal applications across a wide range of building types, including block, ICF, steel frame, and timber frame structures.
This membrane regulates moisture diffusion effectively—allowing diffusion in summer and restricting vapour migration in winter—preventing condensation that can lead to mildew growth and structural damage. CE-certified in accordance with DIN EN 13984, it ensures reliable quality and compliance for professional construction projects.
Key Features & Benefits
-
Lightweight, Flexible, and Moisture-Resistant – Easy to handle and install.
-
Enhances Airtightness & Thermal Performance – Reduces heat loss and improves building energy efficiency.
-
Fixed Sd Value of 27m – Provides consistent water vapour resistance and optimal moisture control.
-
Reduces Drafts and Heat Loss – Maintains a comfortable indoor climate.
-
Versatile Applications – Suitable for ceilings, walls, floors, and loft spaces.
-
CE Certified – Meets DIN EN 13984 standards for quality assurance.
Applications
-
Internal installation to create an airtight building envelope
-
Ceilings, walls, floors, and loft spaces
-
Suitable for all construction types including block, ICF, steel frame, and timber frame buildings
Technical Specifications
| Property |
Specification |
| Colour |
Red graphics on white |
| Elongation Longitudinal |
137% |
| Elongation Transverse |
165% |
| Mass Per Unit Area |
110 g/m² |
| Material |
Airtight Membrane |
| Resistance to Fire |
Class F |
| Roll Area |
75 m² |
| Roll Weight |
8.25 kg |
| System |
Airtight, Suspended Floor |
| Tear Resistance Longitudinal |
≥119 N |
| Tear Resistance Transverse |
≥195 N |
| Tensile Strength Longitudinal |
≥207 N/50mm |
| Tensile Strength Transverse |
≥136 N/50mm |
| Water Vapour Resistance – Sd Value |
27 m (Fixed) |
| Location |
Internal |
| Water Penetration Resistance |
Class W1 |
| Airtightness |
<0.01 m³/(m²·h·50Pa) |
| Approx Coverage |
67 m² |
| Thickness |
0.26 mm |
| μ-Value |
>10,000 |
| Application Area |
Ceiling, floors, internal wall, loft space |
| Size |
1.5 m × 50 m |
Installation Guide
-
Store in dry rooms between +5°C to +25°C, protected from UV radiation.
-
Apply membrane perpendicular to studs, rafters, or joists.
-
Fix to rafters or joists with staples or temporarily with PHS Double-Sided Tape.
-
Seal all overlaps, penetrations, and repairs with PHS Argo Plus (Multi-Tape).
-
For connections to concrete, block, or masonry surfaces, use PHS Ottello adhesive sealant.
-
Ensure a 100mm overlap of membranes and tape to maintain airtight integrity.
Why Choose PHS Apollo 2
The PHS Apollo 2 Vapour Control Membrane delivers a reliable solution for airtight, energy-efficient building envelopes. Its high fixed Sd 27m ensures excellent vapour control, preventing condensation and protecting structures from mildew and moisture-related damage, while enhancing thermal performance and reducing heat loss. Ideal for professional construction projects requiring CE-certified quality and long-term durability.
