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London Sash Windows & Doors Ltd

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London Sash Windows & Doors Ltd

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London Sash Windows and Doors specialise in noise reducing windows & heritage slim double glazing.

05/10/2026

The perfect upgrade for period homes. ✨

We’ve been busy in Kilburn giving this beautiful property the ultimate upgrade—modern efficiency without losing a single drop of historic charm.

🔨 The Scope:

✅Brand new, bespoke timber sashes fitted seamlessly into the existing original box frames, complete with our draught proofing service as standard.

✅ Upgraded to high-performance double glazing to keep the winter chill out.

✅New timber doors and a matching fanlight, expertly fitted straight into the original structural frames.

✅Finished with full professional decoration and timeless antique brass ironmongery.

Preserving the character of London’s architecture while boosting your home’s thermal efficiency. 🏡💨

Get in touch with us now for your FREE home survey👏🏽

📧 [email protected]
📞020 81507153

18/09/2026

Swipe for a full transformation 👉🏽✨

We recently designed, manufactured, and installed this stunning complete door set with a matching sidelight, custom-built to perfectly replicate the customer’s glazing bar request.

When it comes to longevity and performance, we don’t compromise on materials:

✅The Frame: Solid hardwood for ultimate structural strength.

✅The Door & Casement: Crafted from Accoya®️ wood, offering industry-leading stability and rot resistance.

✅The Finish: Hand-painted in a flawless dual-colour scheme to match both the interior decor and exterior character.

✅The Features: High-performance double glazing for thermal efficiency, secured with a robust multi-point locking system.

Tailor-made heritage style built for modern living 🏛️👌🏽

📧 [email protected]
📞020 81507153

11/09/2026

Swipe for the Before and After 🏚️🏛️

A recent front door transformation completed in Highgate. We fitted a new bespoke door leaf directly into the existing frame, creating a seamless like-for-like match using high-performance Accoya wood.

This project in the N6 area perfectly balances heritage character with modern security and efficiency:

✅Premium Accoya timber for ultimate durability and stability.
✅Double-glazed reeded glass to let light in while maintaining privacy.
✅A new double-glazed fixed light positioned above the door.
✅Dual-colour finish to perfectly match both the exterior and interior styling.
✅High-security 3-star Euro cylinder key system.
✅Premium quality ironmongery throughout.

To preserve the authentic character of the property, we carefully reinstated the owner’s existing numbers back onto the face of the new door.

If you are looking to upgrade your period property in Crouch End or Highgate while maintaining its architectural integrity, get in touch now to discuss your free quote 👌🏽

📧 [email protected]
📞020 81507153

04/09/2026

Bringing modern comfort to a Hackney N1 heritage property without losing its historic charm 🏛️✨

For this project, we manufactured and installed new timber sashes directly into the existing frames, paired with a full decoration of the original box frames.

The windows are glazed with LandVac 8.3mm vacuum sealed glass, complete with a 15 year warranty and finished with applied glazing bars, offering incredible energy savings and noise reduction while maintaining a traditional single-glazed profile.

This installation includes two unique windows featuring beautifully crafted curved top sashes with special joinery detailing. Alongside the sashes, we also manufactured and installed a bespoke bottom-hung, inward-opening timber casement window, with all units perfectly complemented by premium ironmongery.

Get in touch now for your free quote 👌🏽

📧 [email protected]
‎📞020 81507153

04/08/2026

Bringing history back to life in Kentish Town! 🛠️✨

Not just beautiful to look at—they actually work!

Here is what this full overhaul involved:

✅Draughtproofing: Sealed tight against winter chills and street noise.
✅Full Overhaul: Smooth, effortless gliding with perfectly balanced weights.
✅Light Decoration: Thorough rub down, precision undercoat, and a flawless top coat.
✅Heritage Ironmongery: Premium new locks and lifts to match the period charm.

No more rattles, no more draughts, just timeless style.

DM us for a free quote on your period property!

📧 [email protected]
📞020 81507153

24/07/2026

The ultimate sash window upgrade, a total transformation 🔄 👌🏽

We gave these classic windows in Muswell Hill a complete modern upgrade without losing an ounce of their heritage charm.

The Spec:

✅Custom double-glazed sashes.
✅Full draught-proofing system.
✅New solid hardwood cills.
✅Authentic heritage ironmongery.
✅Fully painted and decorated by the professional team at r.d.c_painting_decorating_ltd

Tap the link in our bio to book a survey for your home. 📲

📩 [email protected]
📞020 81507153

17/07/2026

Out with the old, in with the identical (but much better) 👋

Incredibly proud of our recent Hampstead Heath, full-replacement orangery project!

Our team manufactured every single piece in premium hardwood Sapele to perfectly match the original architectural charm.

By combining modern performance with timeless aesthetics, this space is now completely transformed.

The finer details:

🪟 True Like-for-Like: Preserving historic character.
🌳 Premium Sapele Hardwood: Built for maximum durability.
☀️ Double Glazed: Ultimate thermal efficiency.
🚪 French Door Style: Elegant, classic garden access.
🔒 Traditional Ironmongery: Authentic, high-quality hardware.

Get in touch now for your free home survey !

📩 [email protected]
📞020 81507153

10/07/2026

Keep the heat out and the cool air in. ☀️🏡

We just upgraded these classic sash windows by fitting brand-new sashes directly into the original, existing frames.

Our complete upgrade system includes:

✅Advanced draught-proofing: Seals out scorching summer air and traps your cool indoor air.

✅Dual-colour paint finish: Perfectly complements your indoor decor and your exterior facade.

✅Heritage ironmongery: Timeless hardware that preserves your home’s historic charm.

Enjoy a beautiful, character-filled home that stays comfortable all year round. DM us today for a free quote! 🛠️

📧 [email protected]
📞020 81507153

02/07/2026

Preserving history, one detail at a time. 🏛️✨

We recently completed a full restoration and upgrade on this beautiful listed building in East London.

Because historical preservation is key, everything was completed on a strict like-for-like basis to meet specific planning guidelines.

Here is what we did:

✅Custom Manufacture: Crafted and supplied brand new door leaves.
✅Seamless Installation: Fitted new door leaves into the original existing frame.
✅Sash Upgrades: Manufactured and installed new sash windows into the existing frames.
✅Glazing Integrity: Kept all glass single-glazed to match the historic character perfectly.
✅Expert Restoration: Carefully refurbished the original leadlight window above the door.
✅Modern Security: Installed brand new, high-security locks without compromising the traditional aesthetic.

Period charm meets modern operation. 🧵🔨

Contact us for a free survey or click the link in our bio to view our portfolio! 📲

📧 [email protected]
📞020 81507153

24/06/2026

Gothic charm meets modern performance, just in time to cope with the British Heatwave 😎

Full list of what’s included in this upgrade :

✅Custom Timber Sashes: Handcrafted in a striking Gothic style.
✅Frame Preservation: Fitted precisely into the home’s existing historic frames.
✅Full Overhaul: Restored smooth operation and structural integrity.
✅Draught Proofing: Sealed up tight to keep the heat out.
✅Heritage Ironmongery: Finished with classic, period-accurate hardware.
✅A premium brand-new Accoya timber door set into the existing frame. Built to last for decades without warping, and secured with high-security espagnolette multi-point locking systems.

Beautiful aesthetics. Unmatched security. Maximum thermal efficiency.

Preserve your home’s character while upgrading its comfort.

Contact us for a free survey or click the link in our bio to view our portfolio! 📲

📧 [email protected]
📞020 81507153

Address

Services Available In:
London
N19

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Telephone

+442081507153

Website

https://www.lswd.co.uk/

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