Knowledge
UltraSIPs blog
Practical guidance on SIP performance, U-values, delivery, and build timelines—written to help you specify with confidence.
SIP Panel Delivery and Offloading: What to Know Before Ordering
A practical guide to SIP panel delivery, vehicle access, customer offloading, and approximate full-board panel weights for Celotex/Soprema and IKO SIP panels.
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SIP Panel Myths: What Is True and What Is Not?
There is a lot of confusion around SIP panels. This guide explains common myths about fire, damp, strength, lifespan, DIY builds, planning and cost.
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How to Measure Windows and Doors for a SIP Kit
If you are supplying your own windows and doors, accurate measurements are essential. This guide explains what to measure before we cut SIP openings.
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Planning Permission for SIP Garden Rooms: A Plain English Guide
A practical UK guide to when SIP garden rooms and outbuildings may fall under permitted development, and when customers should check planning permission first.
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Concrete Slab vs Ground Screws vs Timber Base for SIP Builds
Choosing the right base for a SIP garden room or outbuilding can affect cost, speed, durability and the final finish. Here is how the main options compare.
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How to Save Money on Windows and Doors for Your SIP Build
You do not always need brand new windows and doors for a SIP garden room, office, studio or outbuilding. If you can supply accurate frame dimensions, UltraSIPS can cut openings to suit your chosen windows and doors.
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Building Control and SIP Panels: When Do You Need Approval?
A practical UK guide explaining when Building Control may be needed for SIP panel garden rooms, extensions, annexes, garages and other builds, in plain English.
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SIP Panel Kits UK: What Should Be Included Before You Compare Prices
Comparing SIP panel kit prices is difficult unless you know exactly what is included. Here is what to check before choosing a UK SIP supplier.
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How the UltraSIPs Configurator Helps Price SIP Panels Before Drawings Are Final
The UltraSIPs configurator helps customers test SIP panel sizes, roof types, openings, timber, EPDM and delivery before a final drawing package is ready.
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SIP Panels for Extensions and Annexes: Questions to Answer Before You Order
Extensions, annexes and habitable SIP builds need clearer assumptions than simple garden rooms. Here are the questions to answer before ordering.
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SIP Panels for Garden Rooms: What You Actually Get in a Kit
Garden room SIP kits can vary a lot. This guide explains walls, roof panels, floors, fixings, splines, membrane, EPDM and delivery assumptions.
Read More →122mm vs 172mm vs 222mm SIP Panels: Which Thickness Do You Need?
A simple guide to choosing between 122mm, 172mm and 222mm SIP panels for garden rooms, extensions, annexes and higher performance builds.
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UltraSIPs is now Made in Britain certified: UK-made SIP panels from core materials to finished kit
UltraSIPs is proud to be Made in Britain certified. Our SIP panels are manufactured on the Wirral using UK-made core materials, including OSB, PIR insulation and adhesive.
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UltraSIPS partners with Red Rose SIP Installations for turnkey SIP builds
UltraSIPS customers can now request installation support from Red Rose SIP Installations, helping turn SIP panel supply into a clearer end-to-end build route.
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UltraSIPs teams up with Send It Direct for faster delivery quotes
We have integrated Send It Direct into the UltraSIPs website, checkout and configurator so customers can get clearer delivery pricing without waiting around for manual courier quotes.
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Why UltraSIPS SIP Panel Prices Have Increased in April 2026
We have had to increase our SIP panel prices by 15% from April 2026 after further supplier cost increases linked to insulation inputs, freight pressure and ongoing market instability affecting the wider materials chain.
Read More →Why PIR Insulation Prices Are Rising in 2026
PIR insulation prices are moving again in 2026 because energy exposure, shipping disruption and chemical feedstock pressure are pushing many product lines higher across the market.
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The New UltraSIPS Experience: Configurator, University, IKO SIP Panels & Smarter Accounts
UltraSIPS has just launched a major upgrade to the entire platform. With new IKO Enertherm SIP panels alongside Celotex, a redesigned 3D Configurator, the UltraSIPS University learning hub (plus a 5% completion reward), and improved account tracking, it is now faster than ever to design, price, and build with SIPs.
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SIP Panels UK Self Build Guide 2026: U-Values & Airtightness
Planning a UK self build in 2026? This guide explains how SIP panels deliver speed, strong U-values, and airtightness, with clear steps from design to a weathertight shell. More
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SIP Panels for UK Home Extensions 2026: Comfort, U-Values, Costs
A homeowner-friendly guide to SIP panels for UK extensions and renovations, focusing on comfort, energy bills, U-values, and reduced disruption through faster builds More
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SIP Panels for Garden Rooms UK 2026: Warm, Fast, Efficient
Plan a Warm Garden Room or Outbuilding in 2026 with SIP Panels UK A practical guide to fast, comfortable garden rooms and outbuildings using SIP panels, with U-values, airtightness, and cold weather planning.
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Real SIP Panel Projects: From Drawing to Finished Build
Real SIP Panel Projects: From Drawing to Finished Build See exactly what happens from your initial sketch to finished SIP panel building—with real timelines, costs, and customer outcomes.
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The Complete Guide to SIP Panels UK 2025: Everything You Need to Know
Everything you need to know about SIP panels in 2025. This comprehensive guide covers types of SIP panels, U-values, Building Regulations compliance, installation, costs, and how to choose the right panel for your project. More
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SIP Panels vs Timber Frame Construction: Complete Comparison 2025
Choosing between SIP panels and timber frame construction? This comprehensive comparison examines both methods across cost, build speed, thermal performance, DIY-friendliness, and long-term value to help you make the right decision for your project. More
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SIP Panel U-Values Explained: Meeting UK Building Regulations 2025
Understand SIP panel U-values and ensure Building Regulations compliance. This technical guide explains what U-values mean, how they're calculated, and exactly which SIP panels meet UK Part L 2021 requirements for walls, roofs, and floors. More
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How Much Do SIP Panels Cost? Complete UK Price Guide 2025
Comprehensive SIP panel pricing guide for 2025. Transparent material costs, real-world project examples, and honest comparisons with traditional construction. Includes cost-saving tips and hidden costs to watch for. More
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Garden Room Insulation Guide: Why SIP Panels Are Best in 2025
Planning a garden room? Proper insulation is critical for year-round comfort. This comprehensive guide compares all insulation options and explains why SIP panels outperform traditional methods for thermal performance, build speed, and long-term value. More
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