Choosing the right insulation board for wood stoves, fireplaces, and related heating equipment helps improve energy efficiency, safety, and long-term performance. The following selections from SIMOND STORE, Lynn Manufacturing, and Sasylvia cover high-temperature ceramic fiber boards and baffle options designed to withstand intense heat while reducing heat loss. This guide compares dimensions, temperature ratings, density, and common uses to help you pick a solid, durable insulation board for your stove or fireplace setup.
| Product | Brand | Key Traits | Approx. Temperature Rating |
|---|---|---|---|
| SIMOND STORE Ceramic Fiber Insulation Board – 2300F – 1/2″ x 19.7″ x 39.4″ | SIMOND STORE | High density ceramic fiber; 78 PSI compressive strength; LOI 4-7% | 2300°F |
| SIMOND STORE Ceramic Fiber Insulation Board – 2300F Rated – 0.47″ x 18″ x 24″ | SIMOND STORE | High density; 78 PSI; LOI 4-7% | 2300°F |
| SIMOND STORE Ceramic Fiber Insulation Board – 2300F Rated – 0.47″ x 12″ x 24″ | SIMOND STORE | Compact, high-temperature board; 78 PSI strength | 2300°F |
| SIMOND STORE Ceramic Fiber Insulation Board – 2300F – 1″ x 18″ x 24″ | SIMOND STORE | Thin to thick profiles; 78 PSI; LOI 4-7% | 2300°F |
| Lynn Manufacturing Ceramic Fiber Board Insulation, 2300F-Rated, 15″ x 24″ x 3/4″ | Lynn Manufacturing | 2-pack; low thermal conductivity; easily cut/drilled | 2300°F |
SIMOND STORE Ceramic Fiber Insulation Board – 2300F – 1/2″ x 19.7″ x 39.4″
The 1/2-inch board from SIMOND STORE is a high-density aluminosilicate ceramic fiber panel designed for wood stoves, fireplaces, furnaces, and kilns. It supports up to 2300°F and offers strong dimensional stability with low shrinkage after prolonged heat exposure. The board’s reported LOI (loss on ignition) of 4-7% indicates its ceramic composition maintains performance under repeated heating cycles. Its density range (20–24 lb/ft³) contributes to steady insulating performance for large format installations.
Key considerations: suited for large or custom heat shields where thickness can balance space constraints. The board’s 78 PSI compressive strength helps resist deformation during installation. While highly capable, ensure proper cutting and fitting to minimize gaps that erode insulation efficacy.
SIMOND STORE Ceramic Fiber Insulation Board – 2300F Rated – 0.47″ x 18″ x 24″
This 0.47-inch-thick board from SIMOND STORE maintains a 2300°F maximum use temperature with a density range of 20–24 lb/ft³, suitable for wood stoves, ovens, and kilns. Like the larger variant, it provides strong compressive strength (78 PSI) and a modest LOI of 4-7% after high-heat exposure, making it a reliable choice for mid-range thickness requirements. It works well when space is limited but heat resistance must remain high.
Considerations: the thinner profile reduces bulk but may require careful installation around complex stove geometries. Compatibility with your specific stove model and the need for periodic inspection of edges is important for long-term performance.
SIMOND STORE Ceramic Fiber Insulation Board – 2300F Rated – 0.47 x 12 x 24
This 0.47-inch by 12-inch by 24-inch board offers a compact, high-temperature solution with 2300°F maximum use temperature. The same density range and structural strength apply, ensuring robust performance in tighter stove compartments or where shorter panels fit better. It’s a practical option for targeted insulation or replacing smaller sections of baffles or fireboxes.
SIMOND STORE Ceramic Fiber Insulation Board – 2300F – 1″ x 18″ x 24″
This 1-inch-thick board adds more thermal mass for additional heat retention within fireboxes or combustion chambers. It maintains a maximum temperature rating of 2300°F with a density of 20–24 lb/ft³ and LOI of 4-7%. The increased thickness helps reduce radiant heat loss and can extend the life of internal components by stabilizing temperatures more effectively.
Lynn Manufacturing Ceramic Fiber Board Insulation, 2300F-Rated, 15″ x 24″ x 3/4″
This Lynn Manufacturing board is a 2300°F-rated ceramic fiber panel supplied as a two-pack, sized 15″ x 24″ x 3/4″. It emphasizes low thermal conductivity and thermal shock resistance, making it suitable for repairing or constructing fireboxes, target walls, or front plates. The two-pack convenience supports mid-size stoves or modular installations, while its machinability allows easy cutting with simple tools.
Lynn Manufacturing Replacement US Stove Baffle Board Refractory Insulation
This replacement baffle board by Lynn Manufacturing is designed to fit a range of US Stove models, specifically replacement baffle options like 2500 series and more. The listed size, 22-5/8″ x 14″ x 1/2″, suits several stove configurations. The board supports durable insulation and heat-shielding performance while facilitating a straightforward swap for worn or damaged baffles.
Lynn Manufacturing Universal Baffle Board, 2100F, 21” x 11-3/4” x 1/2”
The universal baffle board from Lynn Manufacturing provides a flexible option for many wood stoves. Sized at 21″ x 11-3/4″ x 1/2″, it’s designed to be cut to fit various models, making it a practical choice when exact part availability is uncertain. The 2100°F rating ensures reliable performance in standard wood-burning applications where baffle integrity is critical for efficient combustion and heat distribution.
Buying Guide
Key purchase considerations help you evaluate insulation boards for wood stoves and related appliances. The following perspectives cover practical, safety, and performance aspects to support a balanced decision.
- Temperature rating: Most boards in this category support up to 2300°F. Choose a product with a margin above your stove’s typical peak to reduce material degradation over time.
- Density and strength: Higher density boards (20–24 lb/ft³) offer better compressive strength and reduced sagging, which is important in larger installations or where boards support other components.
- Thickness and fit: Thicker boards provide more insulation but require more space. Measure the available clearance and choose a thickness that fits without obstructing airflow or maintenance access.
- Thermal performance: Low thermal conductivity and good resistance to thermal shock help maintain stable temperatures and prevent cracking during rapid heat cycles.
- Cutting and installation: Ensure the chosen board can be cut with simple tools if on-site adjustments are needed. Edge finish and sealing gaps improve overall insulation effectiveness.
- Compatibility: Some boards are designed for particular stove models or applications (fireplaces, kilns, ovens). Confirm the board’s dimensions and mounting method align with your stove’s interior layout.
- Longevity and maintenance: Consider LOI values and expected service life when planning replacements. Regular inspection for cracks or delamination helps maintain performance.
From a materials perspective, ceramic fiber insulation boards provide high-temperature resistance with relatively low weight and good thermal stability. For kits or replacements, matching the board thickness, density, and edge geometry with your stove’s interior helps ensure even heat distribution and reduces the risk of hot spots. When in doubt, opt for a slightly thicker, higher-temperature-rated board that can be trimmed to fit the exact dimensions of your appliance.