# TaperedPlus > UK manufacturer and supplier of tapered and flat roof insulation systems, offering PIR, mineral wool, EPS and cellular glass products with design support, thermal calculations and site surveys. TaperedPlus is a B Corp certified UK business that designs, manufactures and supplies insulation solutions for flat roofs, balconies and terraces. The site covers the product range, technical services, sector guidance, case studies and company information for architects, specifiers, contractors and building owners. ## What TaperedPlus does - Supplies tapered and flat roof insulation in PIR, mineral wool, EPS and cellular glass. - Provides design support, U-value calculations, condensation risk analysis and drainage layouts. - Carries out site surveys across the UK to assess existing roofs and support refurbishment schemes. - Supports specifications through NBS Source and direct technical correspondence. - Delivers independent advice because it is not tied to a single manufacturer. ## Products - [Products](/products): Overview of the full insulation product range including PIR, mineral wool, EPS, cellular glass and vacuum insulation panels. - [PIR Insulation](/products/pir-insulation): Polyisocyanurate tapered and flat roof boards with high thermal performance. - [Mineral Wool Insulation](/products/mineral-wool-insulation): Non-combustible stone wool solutions for flat roofs and terraces. - [EPS Insulation](/products/eps-insulation): Expanded polystyrene boards for inverted, profiled and flat roofing. - [Cellular Glass](/products/cellular-glass): Glass foam insulation for high-compression and fire-resistant applications. - [Vacuum Insulation](/products/vacuum-insulation): VIP panels for projects requiring maximum thermal performance in minimal thickness. ## Services - [Services](/services): Full design and technical support services for flat roof and terrace projects. - [Site Surveys](/services/survey): On-site surveys to assess roof condition and insulation requirements. - [Bespoke Design](/services/bespoke-design): Tailored tapered insulation schemes and drainage layouts. - [Specification Support](/services/specification-support): Help with specifications, NBS Source and project detailing. - [Customer Service](/services/customer-service): Order support, delivery coordination and after-sales assistance. - [Thermal Calculations](/services/thermal-calculations): U-value and condensation risk calculations for compliance. - [Drainage](/services/drainage): Flat roof drainage design including crickets and sumps. - [Balconies & Terraces](/services/balconies-terraces): Insulation solutions for external balconies and terrace decks. ## Industries - [Industries](/industries): Sector overview for education, healthcare, commercial, retail, industrial, transport, mixed-use and residential projects. - [Education](/industries/education): Insulation solutions for schools, universities and student accommodation. - [Healthcare](/industries/health): Flat roof refurbishment and new build solutions for hospitals and medical facilities. - [Commercial](/industries/commercial): Office and commercial building roof insulation and design support. - [Retail](/industries/retail): Retail and warehousing roof solutions with fast turnaround. - [Industrial](/industries/industrial): Factory, warehouse and distribution roof insulation systems. - [Transport](/industries/transport): Airports, rail and transport infrastructure roofing projects. - [Mixed Use](/industries/mixed-use): Combined residential and commercial development insulation schemes. - [Residential](/industries/residential): Apartment, housing and private residential flat roof solutions. ## Help & Advice - [Technical](/technical): Technical resources, guidance documents and insulation best practice. - [Help & Advice](/help-advice): Articles and FAQs on flat roof insulation, U-values, regulations and product selection. - [U-Value Calculator](/help-advice/u-value-calculator): Online calculator for checking flat roof U-values. ### Tapered insulation fundamentals - [What Is Tapered Insulation?](/help-advice/what-is-tapered-insulation): Tapered insulation is pre-cut roof insulation that varies in thickness to create a slope on a flat roof, directing rainwater to outlets while providing thermal performance and reducing ponding. - [What Is Ponding on a Flat Roof?](/help-advice/what-is-ponding-on-a-flat-roof): Ponding is standing water that cannot drain from a flat roof as intended; pooling is temporary water that can still drain or dry. - [Flat Roofing Terminology](/help-advice/flat-roofing-terminology): Glossary of key terms from BS 6229:2025 including falls, ponding, back falls, sumps, warm roofs and cold roofs. - [Understanding Set Out Points](/help-advice/understanding-set-out-points-on-tapered-schemes): A Set Out Point is the reference point on a tapered scheme from which installation begins; it must be tied to a permanent structural feature to ensure boards are placed correctly. ### Standards, compliance and performance - [Key Standards for Flat Roofing and Tapered Insulation](/help-advice/key-standards-for-flat-roofing-and-tapered-insulation): Flat roofing is governed by BS 6229 (drainage and workmanship), Approved Document L (U-values), BS 5250 (condensation), BS EN 13501-5/EN 1187 (fire) and Approved Document B. - [BS 6229:2025 Changes](/help-advice/bs-6229-2025-changes-for-tapered-schemes): BS 6229:2025 allows 1:60 prefabricated falls where structural analysis confirms deck tolerance, formally recognises sumps, and places greater emphasis on competency and information exchange. - [BS 6229:2025 Section 4.4 Drainage & Falls](/help-advice/bs-6229-drainage-and-falls-update): The revised section eases design falls to 1:60 with structural analysis, while keeping a 1:80 finished fall target and giving practical rules for sumps and refurbishment. - [BS 6946](/help-advice/bs-6946): British Standard covering calculation methods for thermal resistance and U-values of building elements, including roofs with tapered insulation. - [What is BROOF(T4)?](/help-advice/what-is-brooft4): BROOF(T4) is the highest UK classification for external fire performance of roof systems under BS EN 13501-5 and EN 1187 Test 4; it applies to the whole roof build-up, not individual products. - [Declaration of Performance](/help-advice/why-a-declaration-of-performance-dop-matters-for-insulation-products): The DoP is a legally binding document stating how a construction product performs against declared characteristics; it is the basis for CE/UKCA marking. - [Compressive Strength of Insulants](/help-advice/understanding-the-compressive-strength-of-insulants-and-why-it-matters-for-flat-roof-balconies-terraces): Compressive strength determines how well an insulant supports imposed loads from foot traffic, paving, plant and equipment on roofs, balconies and terraces. ### Energy and retrofit - [Are Your U-Value Calculations Correct?](/help-advice/are-your-u-value-calculations-correct): Accurate U-value calculations require correct thermal conductivity, thicknesses, air gaps, fixings and rainwater cooling; errors can lead to non-compliance and underperformance. - [Warm Roofs for Flat Roofs](/help-advice/warm-roofs-for-flat-roofs-challenges-and-cost-benefits-in-retrofitting): A warm roof places insulation above the structural deck, improving thermal performance and protecting the deck, but retrofit projects must address existing drainage, height limits and waterproofing compatibility. - [Why EPC Ratings Matter](/help-advice/why-epc-ratings-matter-for-buildings-and-how-flat-roof-renovation-can-improve-them): Upgrading a flat roof can improve a building's EPC rating by reducing heat loss, cutting energy costs and helping meet efficiency standards. ## Case Studies - [Case Studies](/case-study): Project portfolio demonstrating TaperedPlus insulation installations across the UK. - [Northcote Library](/case-study/northcote-library): Public library flat roof refurbishment. - [Bristol Airport](/case-study/bristol-airport): Airport terminal and operational building roofing project. - [Fitzjohn Avenue, Hampstead](/case-study/fitzjohn-avenue-hampstead): High-end residential roof and terrace installation. - [Romo HQ, Ashfield](/case-study/romo-hq-ashfield): Commercial headquarters roofing scheme. - [The Croydon Hospital NHS Trust Pathology Building](/case-study/the-croydon-hospital-nhs-trust-pathology-building): Healthcare laboratory roof project. - [Canterbury Christ Church University](/case-study/canterbury-christ-church-university): University building insulation and drainage design. - [Mercedes F1 AMG Operations Facility](/case-study/mercedes-f1-amg-operations-facility): Motorsport facility flat roof solution. - [Wardian Towers, London](/case-study/wardian-towers-london): Luxury residential tower balcony and roof insulation. - [Cambridge Mosque](/case-study/cambridge-mosque): Place of worship flat roof and terrace project. - [Fabrick Square](/case-study/fabrick-square): Commercial office development roof insulation. - [9 Manor Way](/case-study/9-manor-way): Residential project. - [Cadbury Linden 2](/case-study/cadbury-linden-2): Commercial project. - [Wilberforce College, Hull](/case-study/wilberforce-college-hull): Education project. - [Project Red, Manchester Hospital](/case-study/project-red-manchester-hospital): Healthcare project. - [Fanshaw House, London](/case-study/fanshaw-house-london): Residential project. - [103 Elgin Crescent, London](/case-study/103-elgin-crescent-london): Residential project. - [Fulcrum Apartments, Sheffield](/case-study/fulcrum-apartments-sheffield): Residential project. - [Eton College Sports Centre](/case-study/eton-college-sports-centre-2): Education project. - [Linacre House](/case-study/linacre-house): Commercial project. ## Company - [About](/about): Company history, B Corp certification, manufacturing capabilities and team. - [Contact Us](/contact-us): Phone, email and office contact details for sales and technical enquiries. - [Media](/media): Press coverage, awards, publications and media resources. - [Request a Quote](/quote): Quote request form for project pricing and design support. ## Legal - [Terms & Conditions](/terms): Website terms of use and trading conditions. - [Privacy Policy](/privacy): How personal data is collected, used and protected. - [Drawing Terms](/drawing-terms): Terms covering technical drawings, designs and specifications.