About RD SIPs

Who we are

RD SIPs is a modern, family-run supplier of certified Structural Insulated Panels (SIPs) based in Hereford, UK. We supply SIP panels and complete SIP kits for garden rooms, house extensions, annexes and new build homes across the UK.

We started RD SIPs for a simple reason: too many SIP suppliers either focus only on large commercial jobs (and aren’t interested in smaller projects), or they can be expensive and hard to deal with. We built RD SIPs to bridge that gap, making high-performance SIP building accessible for homeowners, self-builders and trade customers.

What we do

We design and supply SIP panels and kits that help you build faster, with excellent thermal performance and reliable, certified quality.

Our typical supply includes:

  • Floor, wall and roof SIP panels

  • Full SIP kits for projects of different sizes

  • Technical guidance during design and planning

  • Clear lead times and delivery coordination

What makes RD SIPs different

Certified quality you can trust

We supply certified SIP panels and operate with professional standards and traceability. Our certifications and memberships include:

  • Structural Timber Association (STA)

  • CATG: SIP Mark Systems

  • ISO 9001

  • STA Assure Silver

  • Made in Britain

  • FSB Member

Panels designed for performance

Our PUR-bonded SIP panels are built for thermal efficiency and consistency. For example, a 147mm panel can achieve a U-value of 0.18 (UK building regs compliant).

Fast, clear lead times

We’re upfront about timelines and keep things moving:

  • Panels in stock: delivery typically within 5 days

  • Special orders: typically around 2 weeks

  • Kits: typically 2–4 weeks

  • House projects: typically 4–8 weeks

Real support (before, during and after)

SIPs are a brilliant building method, but they’re different to traditional construction. We help you get it right, with practical guidance and responsive communication.

We can support with:

  • Reviewing drawings and advising on build-ups

  • Helping you avoid common SIP installation mistakes

  • Guidance on openings, roof types and detailing

  • Advice on access, delivery and site planning

Who we work with

We support projects of all sizes, including:

  • Garden studios and garden rooms

  • Extensions (including large openings for bifold doors)

  • Annexes and holiday lodges

  • Full new build homes (including complex designs)

We work with:

  • Homeowners and self-builders

  • Builders and construction companies

  • Architects and designers

Our promise

When you buy from RD SIPs, you get:

  • Certified SIP panels and kits

  • Straight answers and clear communication

  • Honest lead times and dependable delivery

  • A supplier that treats your project like it matters

Next steps

If you have drawings, send them over and we’ll put together a clear quote. If you’re early stage, tell us what you’re building and where, and we’ll point you in the right direction.

Call to action ideas (choose one):

  • Request a quote

  • Download our info pack

  • Talk to us about your project