BBA-Certified Raised Systems
We use BBA-certified raised loft systems whose certification covers structural loading, insulation compatibility and fire performance — accepted by all major home surveyors and mortgage lenders.
Solihull · West Midlands
Raised Loft Boarding in SolihullStorage and Insulation —Without the Compromise.
BBA-certified raised systems suspend your loft floor 220mm above the joists, preserving the full 270mm of insulation depth required by current Building Regs. Storage and a warm home, instead of one or the other.
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BBA-Certified System
Part L1B Compliant
100kg/m² Load Rating
Fully Insured
10-Year Guarantee
Overview
What Raised Boarding Systems actually involves
What it is
Installation of structural raised legs that lift a boarded floor 220mm above the existing ceiling joists, leaving room for a full 270mm of insulation underneath plus a 50mm air gap.
Who it's for
Anyone planning loft boarding alongside insulation work. Anyone who has already insulated to 270mm and discovered they can't walk on it. Homes targeting an EPC band C or higher for re-mortgaging or rental compliance.
When you need it
Always — there is no scenario where boarding directly to joists outperforms a raised system. The cost difference is £150–£300 on a typical job, recovered within 18 months of insulation savings.
Why it matters
Building Regs Part L1B (2022) effectively requires 270mm of insulation. Direct boarding crushes this to 100mm, halving thermal performance and breaching current standards. Raised systems are now the only compliant option.
The Real Cost of Ignoring This
Why Direct-to-Joist Boarding Is a False Economy
Saving £200 by boarding directly to joists is a textbook false economy. Here's the actual maths.
What it costs to ignore
- Insulation crushed to 100mm loses 60% of its thermal performance — adding £180–£320/year to bills.
- Building Regs non-compliance flagged on home surveys — direct hit to resale value.
- Trapped moisture between boards and crushed insulation rots ceiling joists within 5–7 years.
- EPC rating drops a band — typically £4,000–£8,000 off resale value of a 3-bed semi.
- Re-doing the job correctly later costs roughly 3× the original — boards must be lifted, insulation replaced, sub-frame fitted from scratch.
Common mistakes we fix
- Choosing direct boarding to save £200 — losing £900 of EPC value.
- Using DIY plastic stilts (not BBA-certified) that compress under load and creak.
- Installing raised legs without correct centres — boards bow underfoot.
- Skipping the air gap above insulation — defeating the purpose of the raised system.
Our Process
The 5-step raised boarding systems system
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01
Survey & Plan
Existing insulation depth, joist span and storage zones mapped. Fixed quote within 48 hours.
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02
Insulation Top-Up (If Required)
We bring insulation up to 270mm before raising the floor — combined-job pricing saves a separate trip later.
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03
Raised Leg Install
BBA-certified raised legs fitted at 400mm centres, levelled across the loft span.
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04
Decking & Edging
18mm P5 moisture-resistant T&G boards screwed to legs, perimeter eaves protected, downlight covers fitted.
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05
Sign-Off & Certificate
Walk-test, photo report, building regs compliance certificate and 10-year guarantee.
Why It's Worth It
The measurable benefits
Full 270mm Insulation Preserved
EPC stays intact, heating bills stay down, building regs stay satisfied.
Building Regs Compliant
Part L1B compliant install — passes any home survey, mortgage valuation or rental inspection.
100kg/m² Load Rating
Engineered for real storage — suitcases, business stock, Christmas decorations, gym kit.
Cold-Roof Airflow Maintained
50mm air gap above insulation prevents condensation and protects roof timber.
Future-Proof
If insulation regs tighten further, your raised system already has headroom built in.
Same-Day Install
Most 20m² installs completed in a single day, including insulation top-up.
In Depth
Raised Boarding Systems — the technical detail
Raised boarding systems sound technical — the principle is dead simple. Lift the floor above the insulation. The detail of how that's done is what separates a 25-year floor from a 5-year creaking disappointment.
Leg Spacing & Centres
Legs at 400mm centres on standard 4×2 joists give a 100kg/m² distributed load with zero deflection. Wider centres (600mm) are only acceptable on heavier 6×2 joists with C24 grading.
P5 Moisture-Resistant Decking
We only deck with 18mm P5 chipboard — never standard P2. P5 carries a 25-year structural rating in intermittent damp environments and won't swell at the joints.
Edge Detail & Eaves Protection
We never deck right to the eaves — leaving a 200mm clear band protects ventilation airflow. The deck edge is finished with a softwood lipping for clean visual edges.
Combining With Existing Insulation
If existing insulation is dry and uncompressed, we install over it. If it's wet, settled or contaminated, we top-up or replace before the raised system goes in — quoted transparently.
Listed & Period Properties
Period properties with shallow joists (around 100×38mm) may need joist reinforcement before any raised system. We assess and quote any structural prep at the survey stage.
FAQ
Raised Boarding Systems questions, straight answers
Related Services
Often booked alongside raised boarding systems
Loft Boarding
Heavy-duty boarded floors that double your storage.
Learn moreLoft Insulation
270mm top-ups that cut bills and lock in warmth.
Learn moreLoft Storage Solutions
Bespoke shelving, partitions and crawl-board layouts.
Learn moreLoft Ventilation
Eaves & ridge ventilation to prevent condensation.
Learn moreReady When You Are
Get a fixed-price raised boarding systems quote in Solihull
Free in-loft survey, no-obligation written quote, most jobs booked within 2–3 weeks. We answer every call personally — no call centres, no quote chasing.
Fully Insured £2M PL 10-Year Guarantee
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