Cost Guides
Every pillar article, grouped by topic. Source-cited UK pricing based on supplier data, ONS regional labour indices and installer quotes.
Aluminium Bifold Door Costs UK: Origin vs Smart vs Sunflex
guide to the pricing, specifications, and installation costs of aluminium bifold doors in the UK, comparing top brands like Origin and Smart Systems.
Aluminium Windows Pros and Cons: Is it Worth the Premium?
An expert analysis of aluminium window systems in the UK, covering thermal breaks, lifespan, carbon cost, and a comparison with uPVC and timber.
Argon vs Krypton Gas Fill: Which Window Insulation is Best for UK Homes?
A technical comparison of Argon and Krypton gas fills in double and triple glazing, exploring U-value improvements, costs, and long-term efficiency for UK homeowners.
Article 4 Directions and Window Replacement: UK Planning Rules
How Article 4 Directions remove permitted development rights for windows in UK conservation areas.
Back Door Security Rating: PAS 24, Part Q and Secured by Design Explained
How to choose a back door that meets UK security standards including PAS 24, Building Regulations Part Q, and Secured by Design certification.
Bay Window Cost UK: Pricing for Angled and Square Bays
guide to the cost of replacing or installing bay windows in the UK, comparing uPVC, aluminium, and timber options.
Bifold Door Cost UK: Aluminium vs uPVC Bifolds
A pricing guide for bifold doors in the UK, comparing aluminium systems like Origin and Smart Systems against uPVC options.
Casement Window Cost Guide UK (2026)
Detailed breakdown of casement window costs in the UK, comparing uPVC, aluminium, and timber options with regional price variations.
Composite Alu-Clad Timber Windows: The Best of Both Worlds?
A detailed exploration of aluminium-clad timber windows (composite), covering costs, the internals of alu-cladding, and brands like Internorm and Velfac.
Composite Front Door Brands UK: Solidor vs Rockdoor vs Apeer vs Endurance
Comparing the four biggest UK composite front door brands on security, energy rating, price and warranty — £900 to £2,200 fitted.
Composite Front Door Cost UK: Solidor, Rockdoor, and Apeer Pricing
guide to the cost of composite front doors in the UK, comparing premium brands like Rockdoor, Endurance, and Apeer.
Conservation Area Windows: Article 4 Directions and Listed Building Consent
A guide to window replacement laws in UK conservation areas, covering Article 4 directions, listed building consent, and heritage grants.
Cost of New Build Windows UK: Developer Spec vs Upgrade
What housebuilders include as standard and what you will pay to upgrade — £400 to £1,200 per window unit.
Double vs Triple Glazing: EPC Uplift, Passivhaus Spec, and UK Price Delta
A technical and financial comparison of double and triple glazing in the UK, focusing on U-values, EPC ratings, and Passivhaus standards.
ECO4, HUG2, and GBIS Eligibility: How to Get Free Windows and Insulation
guide to UK government energy grants, including ECO4, HUG2, and the Great British Insulation Scheme (GBIS), for homeowners and tenants.
ECO4 Window Grant Eligibility: Income, EPC and Measure Criteria
How to qualify for free or subsidised windows through ECO4 — income thresholds, EPC band requirements, and the measure rules that catch people out.
FENSA vs Certass vs Building Control: Which Self-Certification Route for Windows?
How FENSA, Certass and local Building Control compare for certifying window replacements — costs, paperwork and selling-impact.
French Doors UK: Composite vs Aluminium and What You Will Pay
French door pricing by material — composite £1,500-£2,500 and aluminium £2,000-£4,000 fitted — with security, thermal and maintenance trade-offs.
French Windows vs Patio Doors: Cost and Comparison Guide
A detailed comparison of French doors versus sliding patio doors for UK homes, including installation costs, security ratings and thermal performance.
Low-E Glass Explained: How Low-Emissivity Coatings Save Energy
Understand how Low-E (low-emissivity) coatings work, the difference between hard and soft coats, and why orientation matters for UK window efficiency.
Part K Safety Glass Rules: Where Toughened and Laminated Glass Is Mandatory
UK Building Regulations Part K requires safety glazing in critical locations — doors, low-level windows and areas near wet rooms.
Part L 2022 Window U-Values: 1.4 for New Builds and 1.6 for Replacements
How the 2022 Part L uplift changed window U-value targets, what it means for your glazing specification and the cost of compliance.
Passivhaus Retrofit (EnerPHit): Upgrading Existing UK Homes to Near-Passivhaus Standard
The EnerPHit standard for retrofitting UK housing stock — what it demands from glazing, airtightness and cost versus full Passivhaus new build.
Passivhaus Windows Spec: U-value 0.80 or Lower and the Path to Zero Energy
A technical guide to the specifications required for Passivhaus-certified windows in the UK, focusing on U-values, triple glazing, and certified suppliers.
Patio Sliding Door Cost UK: uPVC vs Aluminium and Slim-Line Options
A detailed breakdown of sliding patio door costs in the UK, comparing uPVC and aluminium systems, including slim-line profiles and installation pricing.
Sash Window Draught Proofing: Costs and Best Methods
A professional guide to draught-proofing traditional sash windows in the UK, covering strip methods, sealants, and estimated installation costs.
Sash Window Repair vs. Replace: Costs, Consent, and Conservation
A guide to the costs and regulations of repairing vs. replacing sash windows in UK listed buildings and conservation areas.
Secondary Glazing for Listed Buildings: guide
How to improve thermal efficiency in historic properties using secondary glazing, including costs, brands like Ventrolla, and planning permission rules.
Secondary Glazing vs. Replacement: Acoustic and Thermal Trade-offs
A detailed comparison between installing secondary glazing and full window replacement, focusing on listed buildings, noise reduction, and cost.
Self-Cleaning Glass UK: Does It Actually Work? | WindowCost Guide
An honest look at self-cleaning glass in the UK, explaining how Pilkington Activ technology works, the actual maintenance required, and the cost vs benefit.
Steel and Crittall Windows: The Ultimate Guide to Heritage Revival
Exploring the cost, benefits, and thermal challenges of steel windows in the UK, from original Crittall styles to modern thermal upgrades.
Tilt and Turn Windows Cost UK: A Complete Guide to Pricing and Performance
A detailed analysis of tilt and turn window costs in the UK, comparing uPVC, aluminium, and timber options with energy efficiency and security ratings.
Timber Window Maintenance: The Real Cost of Keeping Wood Windows Healthy
guide to maintaining timber windows in the UK, including repaint cycles, engineered timber alternatives, and the true cost of longevity.
How Long Do uPVC Windows Really Last? Lifespan, Yellowing, and Replacement Reality
A detailed guide to the realistic lifespan of uPVC windows in the UK, debunking the yellowing myth and exploring modern recycled profiles.
uPVC vs Timber vs Aluminium: Window Cost and Lifespan Comparison
A detailed comparison of uPVC, timber, and aluminium windows, focusing on price, longevity, and maintenance costs in the UK.
Vacuum Glazing for Listed Buildings: The Modern Solution for Historic Homes
guide to using Vacuum Insulating Glass (VIG) like Pilkington Spacia to improve thermal efficiency in listed buildings without compromising heritage.
Velux Cost Guide: Roof Window Pricing, Sizing, and Alternatives
A complete guide to the cost of Velux and alternative roof windows in the UK, including installation prices and sizing options.
Warm-Edge Spacers: Reducing Edge Heat Loss in UK Windows
Learn how warm-edge spacers improve the thermal efficiency of double glazing compared to traditional aluminium bars, reducing condensation and energy bills.
When to Replace vs Repair Windows: A Triage Matrix
A decision framework for repairing or replacing UK windows — based on age, frame condition, glazing type and cost of each option.
Window Replacement Finance UK: Novuna, Ideal4Finance and FCA-Aware Borrowing
How to finance window replacements in the UK — hire purchase, personal loans and 0% credit, with FCA rules and total-cost comparisons.