When it comes to enhancing energy efficiency in buildings, thermal insulation boards are one of the most effective and widely used solutions. These boards help regulate indoor temperatures, reduce energy consumption, and create more comfortable living and working environments. In this guide, we will explore everything you need to know about thermal insulation boards, including the types available in Saudi Arabia, common sizes, prices, and more. Whether you’re involved in residential construction, commercial projects, or industrial facilities, this guide will help you make an informed choice.
What Are Thermal Insulation Boards?
Thermal insulation boards are rigid panels designed to reduce heat transfer between surfaces. By minimizing the amount of heat that escapes or enters a structure, these boards help maintain desired temperatures and reduce the workload on HVAC systems. They are made from a variety of insulating materials such as extruded polystyrene (XPS), expanded polystyrene (EPS), and polyisocyanurate (PIR), each offering unique benefits.
These boards are typically used in walls, roofs, and floors and are suitable for both new construction and retrofit projects. The lightweight nature and ease of installation make thermal insulation boards a preferred option for contractors and DIYers alike.

Types of Thermal Insulation Boards Available in Saudi Arabia
In Saudi Arabia, where climate control is critical due to high temperatures, several types of thermal insulation boards are commonly used:
- Extruded Polystyrene Thermal Insulation Board (XPS): Known for its excellent moisture resistance and high compressive strength, XPS is widely used in foundations, basements, and roof insulation. It offers superior performance in high-load and damp environments.
- Expanded Polystyrene (EPS) Boards: EPS is a cost-effective option that provides good thermal insulation and is widely used for wall and ceiling applications. It’s lighter and generally less expensive than XPS, making it ideal for large-scale projects.
Polyisocyanurate (PIR) Boards: PIR boards offer the highest thermal resistance (R-value) per inch, making them extremely efficient. They are often used in high-performance building envelopes and areas requiring top-tier insulation.
Forma insulation, a leading insulation material supplier in Saudi Arabia, provides a full range of these products. Whether you need a high-performance solution like PIR or a more budget-friendly option like EPS, Forma insulation has you covered.
Read more about: EPS Polystyrene Sheets

Polystyrene Insulation Board 50mm: Thermal Insulation Boards Sizes
Thermal insulation boards come in various sizes and thicknesses to suit different construction requirements. The standard dimensions for most boards range from 1200mm x 600mm to 2400mm x 1200mm, though custom sizes are also available.
Common thicknesses include:
- Polystyrene Insulation Board 50mm: A popular choice for wall and roof insulation due to its balance between performance and weight.
- 50mm Thick Extruded Polystyrene Insulation Board: Specifically designed for areas that require added durability and moisture protection, such as basements or flat roofs.
Choosing the right size and thickness depends on the building’s insulation needs and environmental conditions. Forma insulation offers guidance and customization options to ensure the perfect fit for your project.
Thermal Insulation Board for Roof
Roofs are one of the most critical areas to insulate, as they are exposed to the highest levels of solar radiation. Using a thermal insulation board for roof applications not only improves energy efficiency but also protects structural elements from thermal stress.
For roof insulation, extruded polystyrene thermal insulation boards are highly recommended. They offer excellent compressive strength and low water absorption, making them ideal for both flat and sloped roof systems. Forma insulation supplies a variety of roof insulation boards engineered to perform in Saudi Arabia’s extreme weather, ensuring long-term durability and energy savings.
Thermal Insulation Boards Price
The thermal insulation boards’ price can vary significantly depending on the type, thickness, and quantity needed. On average:
- EPS boards are the most economical and are suitable for general insulation purposes.
- XPS boards come at a moderate price, offering improved durability and moisture resistance.
- PIR boards are the most expensive but offer the highest insulation performance.
Despite price differences, all options provide long-term savings by reducing energy costs. Forma insulation is known for offering competitive prices without compromising quality, making them a top choice for contractors and developers in the region.
Read also about: Polystyrene Insulation Board

Extruded Polystyrene Thermal Insulation Board
The extruded polystyrene thermal insulation board is a high-performance insulation material ideal for demanding environments. With a closed-cell structure, it resists water absorption and provides consistent thermal resistance over time.
These boards are perfect for:
- Roofs
- Below-grade foundations
- Parking decks
- Cold storage facilities
Forma insulation stocks various grades and sizes of XPS boards, including 50mm thick extruded polystyrene insulation board, ensuring clients find the right product for their application.
Common Questions
1. What are thermal insulation boards used for?
They are used to reduce heat transfer in buildings, improving energy efficiency and indoor comfort. They are suitable for walls, roofs, and floors.
2. Which thermal insulation board is best for roofs?
Extruded polystyrene thermal insulation boards are ideal for roofs due to their strength, moisture resistance, and insulation capacity.
3. Where can I find affordable thermal insulation boards in Saudi Arabia?
Forma insulation is a trusted supplier offering a wide range of thermal insulation boards at competitive prices, suitable for all types of construction projects.
Why Choose Forma insulation?
With years of experience in the industry, Forma insulation has built a strong reputation for supplying high-quality thermal insulation boards across Saudi Arabia. Their product range includes:
- Polystyrene insulation board 50mm.
- 50mm thick extruded polystyrene insulation board.
- Customised solutions for unique project requirements.
Formainsulation’s team provides expert guidance to help customers select the right materials based on their building type, budget, and environmental considerations. They also offer fast delivery and excellent customer service, making them a go-to partner for insulation solutions.
Conclusion
In a region like Saudi Arabia, where managing indoor temperatures is vital, choosing the right thermal insulation boards can make a significant difference in energy consumption and comfort. From cost-effective EPS panels to high-performance extruded polystyrene thermal insulation boards, there is a solution for every need and budget.
With a wide range of sizes, including the popular polystyrene insulation board 50mm, and options like 50mm thick extruded polystyrene insulation board, Forma insulation delivers products that meet the highest standards. Whether you’re insulating a home, warehouse, or commercial space, Forma insulation is your trusted source for quality insulation at the right price.
Know more about: xps insulation board