Roof Tent Mattress

๐Ÿ•๏ธ Roof Tent Mattress โ€“ Made to Measure

Our roof tent mattress is made to measure to fit the wide variety of roof tents used in the UK. You can choose the foam type and thickness to balance comfort, support, and roof clearance, and select from breathable, waterproof, or easy-clean covers designed for real-world camping conditions.

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Measurements

Measurements

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Foam Grade

SUPERIOR HIGH DENSITY FIRM RG50 (WHITE)

High density firm foam RG50 is a high-density, firm foam ideal for heavy-duty support. Itโ€™s commonly used in seat cushions, gym mats, and other applications where durability and strong support are key. This is the perfect foam for thin Pop-top or Roof-Tent mattresses.

Grade
RG50/230
Notional Hardness
230 N
Density
50 kg / m3
Properties
Flame Retardant

PREMIUM HIGH FIRM RX39 (BLUE)

Most popular High density firm foam. Suitable for seating perfect for sofas, dining chairs, boats, caravans, and camper van seating and mattresses. Best choice for cushions 3โ€“4 inches thick. May be too firm for cushions above 5โ€ in thickness

Grade
RX39/200
Density
39 kg / m3
Properties
Flame Retardant
Highly Recommended Firm Seating & Mattress Foam

30PPI RETICULATED FOAM

A durable, open-cell foam that resists water, humidity, and chemicals โ€” ideal for outdoor seating and air/water filtration. Its breathable structure also makes it great for humidifiers, ventilation, and industrial filtration systems.

Properties
Not Fire Retardant (None F/R)
Perfect for Outdoor Seating

RX39 FIRM / MEMORY FOAM 1" (2.5cm) COMBO

This product is made by laminating RX38 firm blue foam with a 1″ layer of memory foam. It is essential that the total thickness (C) is greater than 1″. If you order this product at exactly 1″ thick, it will consist of memory foam only

Grade
RX39 / Memory Combo
Density
40 kg / m3
Properties
Flame Retardant

SF40 STANDARD MEMORY FOAM (WHITE/ YELLOW)

High-quality UK-made, heat-sensitive foam that softens and moulds to your body, offering pressure-relieving comfort. Commonly used in mattresses, toppers, pillows, wheelchair cushions, and medical products.

Grade
SFV40
Notional Hardness
60 N
Density
40 kg / m3
Properties
Flame Retardant

MEDIUM FIRM REFLEX 40 / MEMORY 1" COMBO

IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 1″ layer of memory foam. If you order at 1″ thick, youโ€™ll receive memory foam only โ€” without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 1″.

Grade
Reflex 40
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
40 kg / m3
Properties
Flame Retardant

MEDIUM FIRM REFLEX 40 / 2" MEMORY COMBO

IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 2″ layer of memory foam. If you order at 2″ thick, youโ€™ll receive memory foam only โ€” without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 2″.

Grade
Reflex 40 H / v50
Notional Hardness
135 N
Room Temp. Hardness
135 N
Density
36 kg / m3
Properties
Flame Retardant

PREMIUM MEDIUM FIRM REFLEX 40H (GREY)

High density, medium firm foam Reflex 40h is a high-quality foam known for lasting comfort and support. It bounces back quickly and keeps its shape for yearsโ€”perfect for sofa cushions, armchairs, or even as a mattress.

Grade
REFLEX 40 H
Notional Hardness
150 N
Density
40 kg / m3
Properties
Flame Retardant
Highly Recommended, High Density, Medium Firm, Seating & Mattress Foam

TRI-ZONE(Firm)

Foam is made in 3 sections, Central section RG50 supports occupants mid section head and foot of mattress Reflex 40 provides soft level of support were its needed.ย 

COVER ONLY (NO FOAM)

Use this option to create a cover to the sizes entered above

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Measurements

Foam Grade

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Description


๐Ÿ•๏ธ Roof Tent Mattress โ€“ Made to Measure for Rooftop Tents

A well-made roof tent mattress can transform your camping experience. Many factory-supplied roof tent mattresses are thin foam pads designed to save space and weight rather than provide meaningful comfort or support. Over time, this can lead to poor sleep, pressure points, and overheating.

Our roof tent mattresses are made to measure, allowing you to configure the size, foam type, thickness, and cover to suit your tent, your vehicle, and how you travel.


๐Ÿ•๏ธ Why Roof Tent Mattresses Are Not One-Size-Fits-All

Roof tents available in the UK come in many different designs, including:

  • Hard shell roof tents

  • Soft shell fold-out roof tents

  • Clamshell roof tents

  • Multi-panel folding roof tents

Each design has different internal dimensions, hinge points, and folding mechanisms. As a result, there is no true standard roof tent mattress size.

In addition to structural differences, roof tents from different manufacturers also vary significantly in layout and internal sizing. Customers commonly use this mattress with popular hard-shell and soft-shell roof tents from manufacturers such as TentBox, iKamper, Roofnest, and similar UK-available brands.

Because internal dimensions, hinge positions, and folding panels differ between manufacturers, there is no single โ€œoff-the-shelfโ€ mattress that fits every roof tent. Thatโ€™s why each roof tent mattress is made to measure, ensuring it fits correctly within the tent, folds as intended, and maintains appropriate roof clearance โ€” regardless of brand.

By choosing a custom-sized roof tent mattress, you get a precise fit that:

  • Maximises usable sleeping space

  • Avoids gaps, bunching, or poor folding

  • Sits correctly on the tent base

  • Improves overall comfort and support


๐Ÿง  Foam Options โ€“ Balancing Comfort, Support & Weight

Every roof tent mattress starts with foam, but not all foam performs the same way. We offer a choice of foam options so you can balance comfort, support, weight, and roof clearance.

  • High-density support foam โ€“ firm, durable, and ideal as a base layer

  • Memory foam options โ€“ added pressure relief for shoulders and hips

  • Hybrid constructions โ€“ supportive base foam with a softer comfort layer

This flexibility allows you to tailor your mattress for side sleeping, longer trips, uneven ground, or lighter-weight setups.


๐Ÿงต Mattress Covers โ€“ Practical Choices for Roof Tent Use

Roof tents experience temperature changes, condensation, and outdoor use. We offer cover options designed to cope with these conditions:

  • Breathable covers โ€“ ideal for everyday camping

  • Waterproof covers โ€“ help protect against moisture and condensation

  • Easy-clean covers โ€“ durable, wipe-clean fabrics for practical use

All covers are:

  • Zip-off and removable

  • Machine washable at a low temperature

  • Must not be tumble dried


๐Ÿ›๏ธ Add a Memory Foam Topper for Extra Comfort

If you want to fine-tune comfort without replacing the mattress, many customers choose to pair their roof tent mattress with a Custom Size Memory Foam Topper.

A topper allows you to:

  • Add pressure relief without increasing mattress bulk

  • Choose foam grade and thickness independently

  • Adjust comfort for longer trips or side sleeping

๐Ÿ“ฆ Storage & Space Tip

When not in use, memory foam toppers can be rolled and stored in a vacuum-seal bag, significantly reducing their packed size. This makes them easy to stow in the vehicle while travelling and return to the bed once parked โ€” ideal where space and roof clearance are limited.


๐ŸŒฌ๏ธ Reduce Heat & Condensation with an Airflow Spacer

Condensation is a common issue in roof tents, particularly in the UK climate. To help manage this, many customers add a Moisture Reducing Mattress Spacer beneath the mattress.

The spacer:

  • Promotes airflow under the mattress

  • Helps reduce heat and moisture build-up

  • Improves drying in damp conditions

  • Adds light, evenly distributed support without bulk


โš ๏ธ Roof Clearance & Practical Use

Roof tents have limited internal height, so thickness choices matter. When configuring your mattress and any additional layers, consider how the tent folds and how much clearance is available when packed down.

Where space is tight, many customers:

  • Use the mattress alone while travelling

  • Store the topper separately

  • Refit the topper once the tent is set up

This approach keeps the setup practical without sacrificing comfort at night.


๐Ÿ•๏ธ Why Choose a Foam4U Roof Tent Mattress?

  • Made-to-measure for your specific roof tent

  • Choice of foam types and thicknesses

  • Multiple cover options, including waterproof and easy-clean

  • Compatible with memory foam toppers and airflow spacers

  • Designed for real-world UK roof tent use

  • Manufactured in the UK


๐Ÿ•๏ธ Build the Right Roof Tent Sleep System

For the best results, many customers choose a layered setup:

This allows you to tailor your roof tent sleeping setup to your tent, your vehicle, and how you travel โ€” without compromising space, practicality, or roof clearance.