Thermoguard Fire Varnish Overcoat Interior
- Protect your surfaces from fire & smoke
- Structural strength solutions
Thermoguard Fire Varnish is a professional-grade clear intumescent varnish system designed for protecting timber and timber-based surfaces to BS Class 1, Class 0 and BS EN Class B s2 d0. When applied as a system with either the interior or exterior overcoat, it provides robust flame resistance, a durable finish and an aesthetically pleasing clear or stained look.
Ideal for new or bare internal wood, the system enhances natural wood grain while safeguarding surfaces against fire, heat and smoke. The Fire Varnish Basecoat intumesces under heat, forming an insulating char barrier. It is finished with either the Interior or Exterior Fire Varnish Overcoat which protects against UV, wear and cleaning.
Suitable for:
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Bare wood and previously varnished surfaces (with proper prep)
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Interior wood including ceilings, panelling and walls
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Exterior wood (with appropriate overcoat and full sealing)
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Not for use on floors or heavily trafficked surfaces
Available in 20m² packs.
Surface Preparation
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Ensure wood is dry (max 18% moisture), clean and free from wax, grease or other contaminants.
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Previously varnished surfaces must be abraded to provide a key.
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For OSB or other chipboards, test for cissing; degrease if needed.
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Fill gaps with Thermoguard Intumescent Mastic and seal rear faces of external wood.
Technical Data
| Specification | Detail |
|---|---|
| Fire Rating | BS Class 1, Class 0, BS EN Class B s2 d0 |
| Basecoat Type | 2-pack water-based intumescent varnish |
| Finish Options | Matt or Satin (Clear or Woodstain) |
| Suitable Substrates | Timber and timber derivatives |
| Pack Sizes | 20m² (Basecoat & Overcoats) |
| VOC Content | 16 g/l (Low VOC) |
| Application Method | Brush, roller or spray |
| Overcoat Time | 1–4 days after basecoat dries |
| Drying Time (Basecoat) | Min 8 hours / Overnight |
| Interior Use | 1 Basecoat + 1 Overcoat (Clear) or 2 (Stain) |
| Exterior/Damp/High Wear | 1 Basecoat + 2 Overcoats |
Directions for Use
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Mix the 2-pack basecoat and allow to stand 30–60 mins before use. Use within 4 hours.
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Apply 1 coat of Fire Varnish Basecoat to dry wood.
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Allow to dry overnight (min 8 hours) and hard dry before overcoating.
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Within 4 days, apply 1 or 2 coats of Fire Varnish Overcoat:
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1 coat for clear interior finish
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2 coats for woodstain or exterior use
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Ensure correct coverage rate as specified on the can.
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Clean tools immediately with water after use.
Data Sheets
We aim to deliver your products as quickly, safely and efficiently as possible. Below you'll find a full overview of our delivery process, options, pricing and terms. If you have any questions or a time-sensitive order, our team is always happy to help — just give us a call on 01902 712286.
📦 Standard Delivery
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Free delivery on all orders over £100 + VAT within UK mainland.
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For orders under £100 + VAT, a standard shipping fee will apply at checkout.
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Orders are typically delivered within 2–5 working days after receipt of cleared payment.
We use Parcelforce and FedEx as our main carriers, though this may vary based on location or size of your order.
⚠️ Important Notes on Delivery
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Orders placed after 12 midday (Monday–Friday) are usually dispatched the next working day.
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If you require urgent dispatch or Saturday delivery, please call us before placing your order.
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Do not schedule contractors or start work until goods have arrived and been checked — we cannot be held responsible for project delays due to late or damaged deliveries.
🚚 Next Day & Timed Delivery Options
We offer express shipping for orders needing a quicker turnaround:
| Service | Typical Cost* (Ex. VAT) |
|---|---|
| Next Day Delivery | £10.50 |
| Next Day AM Delivery | £15.00 |
| Specialist Items | £22–£25+ |
*Pricing depends on order contents and size. For mixed/tinted paint or specialist coatings, next-day delivery may cost more due to courier restrictions.
Please contact us if your order is time-sensitive — we’ll confirm what options are available based on your products and location.
📍 Delivery Outside UK Mainland
International Delivery
We are pleased to offer worldwide delivery on both parcel and pallet orders.
Parcel Shipments
All international parcel deliveries are handled by FedEx International. Shipping times and costs vary depending on destination, parcel size, and service availability.
Pallet Shipments (Including Dangerous Goods)
For palletised orders — including those containing dangerous goods - we work with independent specialist freight companies experienced in compliant global hazardous materials transport.
Due to the nature of these shipments, pricing and transit times are provided on a case‑by‑case basis.
Requesting an International Delivery Quote
If you would like to place an international order, simply get in touch and we will prepare a personalised shipping quote. Please provide the following details:
- Your full name
- Delivery address (including country and any required customs information)
- Details of the items you would like to order
- Quantities for each item
Once we have this information, we’ll handle the rest - from calculating the most suitable shipping method to arranging safe and compliant delivery to your destination.
🛠️ Specialist Products & Pallet Deliveries
Some coatings are made to order, particularly from premium brands like Sigma/PPG. These orders:
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May have longer lead times
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May carry a £150 + VAT delivery charge
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Could require pallet delivery — a separate charge may apply
If your order requires palletisation, we’ll contact you after checkout to confirm delivery costs. You're also welcome to contact us first for a delivery quote before placing the order.
📦 Stock & Availability
We hold a large amount of stock ready for immediate dispatch, but:
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Some products may need to be ordered in from manufacturers
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Specialist items may be tinted or made to order, causing additional lead time
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We’ll always aim to part-deliver where possible to avoid unnecessary delays
If you’re on a strict deadline, please get in touch before ordering so we can advise on delivery timeframes.
🚫 Delivery Liability
While we work hard to ensure your order arrives safely and on time, we use third-party carriers and cannot be held liable for:
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Delays in transit
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Lost shipments
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Goods damaged in delivery
If your order is damaged or delayed, please let us know as soon as possible. We are not always informed automatically by the courier, so your input is essential.
We will work with you to resolve any issues — whether that means replacing items or chasing the carrier.
Note: Address changes after dispatch may incur additional charges, so please double-check your delivery details at checkout.
🧾 Payments & Order Processing
Orders are only processed once full cleared payment has been received.
You will receive email updates at each stage of the process:
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Pending – order received
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Processing – being picked, packed or manufactured
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Dispatched – on the way with the carrier
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Back order / Part dispatched – if stock is split or delayed
Need Help?
If you're unsure about shipping costs, timelines, or need your order by a specific date, we strongly recommend giving us a quick call before placing your order:
📞 01902 712286
📧 info@andrewscoatings.co.uk
We're here to help make sure you get the right product, in the right place, at the right time.





