Window & ETICS Integration Guide
Installation positions (middle vs outer face), RAL sealing methods (tapes, Trio, liquid membranes) and comparative costing.
Read moreProper Window & Door Installation
A premium window will perform like a cheap one if installed incorrectly. Discover European RAL installation standards, learn to spot the most common mistakes and check quality step by step.
RAL Sealing Materials: Catalogue & Costs
Full catalogue of materials (3-in-1 tapes, foams, membranes, sealants), Greek market brands and indicative per-metre costs.
Read moreOpening Preparation & Subframes
Bad foundations ruin everything. If the "base" is wrong, no aluminium system can save you. Modern support materials, proper levelling and classic mistakes.
Subframes: Why galvanised sheet metal is wrong
The perfect thermal bridge - transfers cold inside and causes rust stains in the plaster.
Read moreInsulating Subframes (Purenit / EPS)
High-density recycled PU: withstands heavy loads and cuts cold transfer completely.
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The continuous marble sill mistake
A sill without a thermal break transfers freezing cold straight into the living room.
Read moreRemoving old windows during renovation
Dry construction and specialised cutting tools: without demolishing half the wall.
Read moreProper Levelling & Fixing
Foam is NOT a fixing material! Plastic packers, turbo screws, correct fixing distances.
Read moreSizing: How much clearance should the builder leave?
1-2 cm joint around the frame - space for expansion and sealing materials.
Read moreJoint Sealing & Airtightness (RAL Installation)
Forget cheap foam and basic silicone. Learn how to seal hermetically and permanently - with three sealing levels.
RAL Installation: What it is and why to demand it
Three sealing levels (interior, middle, exterior) = zero losses.
Read morePU Foam: Elastic vs Cheap Expanding
Aluminium expands - rigid foam cracks. Flex foams follow the movement.
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Expanding Joint Tapes (Compriband)
Self-expanding foam tape - blocks rain/air but lets the wall "breathe".
Read moreAirtightness Membranes (EPDM / Fleece)
"Tighter inside, open outside" - EPDM tapes prevent moisture entering the joint.
Read moreAcrylic Sealants vs Silicone vs MS Polymer
Which takes paint, which resists UV, which sticks everywhere - practical guide.
Read morePatio door threshold sealing
Liquid waterproofing under the sliding frame = zero water in the living room.
Read moreThermal Bridges & Envelope Integration
The window is part of the wall. How it connects to external insulation and how correct detailing eliminates losses.
Connection to External Insulation (ETICS)
Insulation "overlaps" the frame by 1-2 cm - the linear thermal bridge disappears.
Read moreInstallation Position: Outer face, middle or inner?
Isothermal analysis: where to place the window to avoid condensation.
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Eliminating the shutter box thermal bridge
XPS inside the box - without obstructing shutter movement.
Read moreOut-frame Installation
The Passive House standard: window entirely within the insulation layer.
Read moreFrame Extensions & Cover Trims
Decorative trims around the frame - properly sealed to avoid trapping water.
Read moreSealing external cables (motors & sensors)
U-drip loop: rain doesn't follow the cable into your home.
Read moreInstallation Errors, Pathology & Quality Control
Consumer protection guide. Spot poor workmanship, fix small issues DIY, and learn what to check before paying.
The 5 most destructive installation mistakes
Wrong screws, cheap silicone, no levelling - costly defects exposed.
Read moreWindow sticks 1 month later: What went wrong?
Building settlement, poor glazing shimming or loose screws - causes and fixes.
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Water from the bottom corner: Where is it leaking?
Blocked drainage slots, cut EPDM gasket, or reversed marble slope?
Read moreThe A4 Paper Test: Are the gaskets sealing?
Close the sash on a sheet of A4 - if it pulls out easily, gaskets need adjustment.
Read morePlaster cracking around the frame: Why it happens
Aluminium expands, the wall doesn't - rigid fillers = cracks. Solution: elastic filler.
Read moreHandover Protocol (10-Point Checklist)
Don't pay until you've checked scratches, locking, joints and smooth operation.
Read moreMain windows & doors guide
Return to the full guide covering materials, types, glazing, shading and economics.
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