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External wall insulation of buildings
Dry wall systems, cast-in-place concrete and masonry external walls, reducing thermal bridges and condensation
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Applications
From residential external walls to cold store floors, from underfloor heating underlays to road subgrades — different positions have different requirements for thickness, compressive strength, water absorption and fire resistance. This page sets out common practice by position.
Scenarios
Seven typical positions of use
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Flat concrete and steel-structure roofs
Roof insulation and thermal protection, balancing compressive strength and dimensional stability
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Low-temperature radiant floor heating
Insulation under the heating pipes, directing heat upward into the room only
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Cold store and low-temperature storage floors
High compressive strength and low water absorption, controlling frost heave and cooling loss
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Car-park decks and garage roof slabs
Damp-proof insulation under soil cover and traffic loads
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Roads, bridges, tunnels and airport runways
Frost-heave treatment of the subgrade and structural damp-proofing
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Decorative modelling and industrial uses
Profile carving, display props, equipment packaging and thermal protection
Selection Notes
Key selection points by position
The following are common practice discussed during supply; the final build-up and thickness follow the energy-saving design calculations and drawings.
| Position | Key requirements | Recommended product | Common practice notes |
|---|---|---|---|
| External wall insulation (ETICS) | Fire class, bond reliability, dimensional stability | B1 class XPS board / graphite XPS board | Surface treatment of the board face, anchors plus mesh rendering, with diagonal reinforcement at the four corners |
| Roof insulation | Compressive strength, low water absorption, coordination with screed and fall | XPS board (40–80 mm) | Full coverage with staggered joints; tongue-and-groove boards reduce thermal bridges; inverted roofs prefer XPS board |
| Underfloor heating underlay | Stable density, intact reflective film, sound insulation | Underfloor heating insulation board + reflective film | A boundary insulation strip along the wall edge; seal the overlaps before backfilling |
| Cold store and low-temperature floors | High compressive strength, damp and vapour proofing, freeze-thaw resistance | High-compressive XPS board (50–100 mm) | Laid in staggered layers with a vapour barrier, controlling floor frost heave |
| Garage roof slab / car-park deck | Long-term load bearing without compression | XPS board ≥350 kPa | Protect the board face from rebar and machinery puncture; keep the drainage layer bays clearly divided |
| Roads, bridges and tunnels | Frost-heave resistance, water resistance, stability | High-compressive XPS board (60–100 mm) | Laid within the subgrade replacement layer, with staggered joints and protection from construction damage |
| Decorative modelling | Easy to cut, fine surface | EPS foam blocks / profiles | Cut and shaped with a hot wire, then given surface treatment and finishing |
Service & Delivery
Supply scope and construction support
The sales network covers Qingdao, Yantai, Weihai, Rizhao and other cities, and the company is listed as a designated supplier by large domestic developers such as Hisense Real Estate, Baitong Real Estate, Qingjian Group, Poly Real Estate and Greentown Real Estate.
- Sites in Qingdao and the surrounding area are produced by batch and shipped in stages, with stack numbers matching the delivery documents.
- Common sizes are kept in stock; non-standard sizes and shaped pieces are cut to the drawings.
- With a grade-two construction qualification, it can contract external wall insulation, coatings and decoration projects.
- It assists with test submissions and acceptance documentation, and provides factory inspection and conformity certificates.
Hisense Real EstateDesignated supplier
Baitong Real EstateDesignated supplier
Qingjian GroupDesignated supplier
Poly Real EstateDesignated supplier
Greentown Real EstateDesignated supplier
General contractors and decoration firmsProject ancillary supply
The list of partners is compiled from company promotional materials and is used to show the supply and service range.
4 citiesQingdao · Yantai · Weihai · Rizhao
Workshop Films
Production line and dispatch, filmed on site
On-site videos of extrusion, cutting, stacking and the yard show the density of the boards and the condition of the stacks directly.