Sigma tin image with colour wheel on a white background

SigmaCover 456

Regular price
Unit Price:

£184.20 (inc. VAT)
£153.50 (ex. VAT)

/
Size
  • Can’t see your colour? Contact us — we can probably mix it

PPG SigmaCover 456 – High-Build Epoxy Coating

PPG SigmaCover 456 is a two-component, high-build, polyamide-cured epoxy coating designed for long-term protection of steel and concrete structures in both atmospheric land and marine environments. With availability in a wide range of colours including RAL, BS, NCS and NCS 2050, it offers versatile specification options for industrial and marine projects.

Engineered for performance in challenging conditions, SigmaCover 456 cures at temperatures down to -10°C and can be applied in environments with up to 95% relative humidity without compromising finish quality. Its tough, flexible film provides excellent water resistance and protection against mild chemical splash, while also ensuring strong adhesion to sound aged coatings.

Compatible with a wide range of two-component and conventional topcoats, SigmaCover 456 is ideal for both new construction and maintenance, especially where long recoat intervals are required.

Key Features:

  • Two-component, high-build polyamide epoxy coating

  • Available to be tinted (RAL, BS, NCS, NCS 2050)

  • Cures in cold conditions down to -10°C (14°F)

  • Performs in high humidity (up to 95% RH)

  • Excellent adhesion to aged alkyd, chlorinated rubber & epoxy coatings

  • Flexible, durable coating with water & mild chemical resistance

  • Easy to apply by air spray, brush or roller

  • No induction time – 6-hour pot life

  • Fast curing: Touch dry in 3 hours; fully cured in 7 days

  • Suitable for both land and marine environments

Surface Preparation

Substrate conditions
• Compatible previous coat must be dry and free from any contamination
Substrate temperature and application conditions
• Substrate temperature during application and curing down to -10°C (14°F) is acceptable; provided the substrate is free from ice and dry
• Substrate temperature during application and curing should be at least 3°C (5°F) above dew point

Technical Data

Mixing ratio by volume: base to hardener 82:18 (4.56:1)
• Adding too much thinner results in reduced sag resistance
• The temperature of the mixed base and hardener should be above 10°C (50°F), otherwise extra thinner may be required to obtain application viscosity
• Thinner should be added after mixing the components

Directions for Use

Pot life
5 hours at 20°C (68°F)

Air spray
Recommended thinner
THINNER 91-92
Volume of thinner
5 - 10%, depending on required thickness and application conditions
Nozzle orifice
2.0 – 3.0 mm (approx. 0.079 – 0.110 in)
Nozzle pressure
0.3 - 0.4 MPa (approx. 3 - 4 bar; 44 - 58 p.s.i.)

Airless spray
Recommended thinner
THINNER 91-92
Volume of thinner
0 - 5%, depending on required thickness and application conditions
Nozzle orifice
Approx. 0.48 – 0.58 mm (0.019 – 0.023 in)
Nozzle pressure
15.0 MPa (approx. 150 bar; 2176 p.s.i.)

Brush/roller
Recommended thinner
THINNER 91-92
Volume of thinner
0 – 5%

Cleaning solvent
• THINNER 90-53

Data Sheets

SigmaCover 456 TDS

SigmaCover 456 Base MSDS

SigmaCover 456 Hardener MSDS

Delivery Information

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

  • Free delivery on all orders over £100 + VAT within UK mainland.

  • For orders under £100 + VAT, a standard shipping fee will apply at checkout.

  • 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

  • Orders placed after 12 midday (Monday–Friday) are usually dispatched the next working day.

  • If you require urgent dispatch or Saturday delivery, please call us before placing your order.

  • 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

For locations such as:

  • Northern Ireland

  • Isle of Man

  • Channel Islands

  • Republic of Ireland

  • Scottish Highlands or Islands

Additional courier surcharges may apply. These are not always visible at checkout, so we may contact you after your order is placed to confirm the final shipping charge.


🛠️ Specialist Products & Pallet Deliveries

Some coatings are made to order, particularly from premium brands like Sigma/PPG. These orders:

  • May have longer lead times

  • May carry a £150 + VAT delivery charge

  • 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:

  • Some products may need to be ordered in from manufacturers

  • Specialist items may be tinted or made to order, causing additional lead time

  • 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:

  • Delays in transit

  • Lost shipments

  • 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:

  • Pending – order received

  • Processing – being picked, packed or manufactured

  • Dispatched – on the way with the carrier

  • 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.

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Testimonials

★★★★★

I stumbled across Andrews Coating Services as i was moaning about having spent laids on Everest (waste of a LOT of money) Concrete driveway paint and sealant only for petals to stick to it in rain, fade really badly, and peal away after 18 mths.
I spoke to Matt initially and explained my predicament and what i wanted to achieve with the paint and its application, his knowledge is second to none and having qualified my needs unlike the generic paint suppliers his can do attitude and understanding and quick turnaround made me visit him and place orders, the fact that you can choose pit of 70k+ colours is great but the fact that they just don't do domestic paints they also do specilaist paints such as hygienic wipe down and commercial and a vast array of other types too...

Paul Saib
Walsall, UK
★★★★★

I can't fault the service and courtesy of this firm. The order was delivered as promised, and when a slight issue arose, it was corrected without question and quickly. I would use this firm repeatedly, and it is refreshing to find such good service nowadays. Also, they stocked the specialist products I wanted, when many were unable to supply. I am a customer for life.

Michael Walsh
★★★★★

On behalf of the team at FlowCopter Ltd. I'd like to thank You for Your services, ease of contact, the technical know-how and very competitive prices. On top of all that, order processing and delivery time was beyond any expectations ! TOP notch company. Highly Recommended.

Marek Szupryczynski
LOANHEAD, UK
★★★★★

Excellent service from this company again. Enquiries are dealt with quickly and politely and order arrived well within estimated time with full tracking information provided. This is my second order and wouldn't hesitate to deal with them again.

Kelvin Appleby
DURHAM, UK
★★★★★

First class service. Thanks to the knowledge and experience of Andrews Coatings Ltd we now have solved a challenging problem through the use of an easily applied peelable coating. 👍👍👍

Graham Williams
★★★★★

I've used Andrews Coatings quite a few times over the last few months and their service has always been first class.
This is especially true when a manufacturer discontinued a paint - The customer service department went out of their way to obtain any available materials to allow me to complete my project. I can't recommend highly enough!

Daniel Pointon
LEICESTERSHIRE

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