
Why builders work with cor-line
WHAT TRADES SAY
Adrian Sobolewski
SOBART CONSTRUCTION
What a smoothness experience What a smoothness experience. Amazing sliding doors, quick turnaround and faboulous customer service. We will definitely be working with Cor-Line on future projects.
Kyle Pooley
THE OAK FRAMERS SW LTD
Top Service, Friendly Staff I can highly recommend Cor-Line Systems, Harrison is great to deal with and makes things happen in a timely and professional manner. We are a high end builder specialising in oak framed buildings and source all of our bifolds from Cor-Line, the technical department were happy to work with us to develop a way of installation that gives the forgiveness needed when fitting in to oak frames. Top Service
Alasdair Primrose
PRIMROSE PROPERTY SERVICES
We ordered 3 sets of Cor-Line windows, Graham was very helpful, quick to turn round quotes and the windows actually arrived earlier than expected. Stunning product and happily recommend

Who this is for
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Residential builders​
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Extension and refurbishment specialists​
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High-end new build contractors​
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Developers
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Main Contractors
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Architects & Architect led projects
WHATS HOT
Popular aluminium systems specified by builders
COR-VISON
Bi-Folds
CASMENTS
Why it’s hot .Used where opening size and sightlines matter .Strong choice for architect-led extensions .Delivers impact without complex installs Where builders use it .Rear extensions .New-build living spaces .Projects with large structural openings
Why it’s hot .Familiar system clients understand .Reliable option for refurb and extension work .Flexible opening widths without redesign Where builders use it .Side and rear extensions .Kitchen-diner refurb projects .Budget-controlled high-end jobs
Why it’s hot .Matches door sightlines across elevations .Clean profiles suit modern and traditional homes .Easy to specify alongside doors Where builders use it ​.Whole-house refurbishments .New builds .Extensions needing visual consistency
QUOTES THAT STAND OUT TO THE TRADE

Why ours stands out
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Clear project summary on page one
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Every opening shown individually
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Sizes listed exactly as supplied
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System type stated per opening
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Glass spec written in plain terms
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Finish and colour confirmed clearly
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Hardware included and listed
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Elevations included for checking
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Itemised pricing per product
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Totals broken down simply
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VAT shown separately
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No vague wording. No buried extras.


Why this matters
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Easy to cross-check against drawings
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Faster approval from clients
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Fewer follow-up questions
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Fewer mistakes at manufacture
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Cleaner handover to installers
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This is where trade aluminium systems live or die.
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Clear quotes reduce problems later.
