ASTM F1918 Explained: The Soft Contained Play Standard
A plain-language guide to ASTM F1918, the US standard for soft contained play equipment: scope, editions, related standards and what to ask suppliers.
Short answer: ASTM F1918 is the US safety performance specification for soft contained play equipment, the multi-level padded and netted structures found in play centers, restaurants and churches. It covers users from about 2 to 12 years old and addresses materials, performance, access and exit, structural integrity, maintenance, fire safety and evacuation.
If you are buying a multi-level indoor playground, ASTM F1918 is the standard your supplier, landlord, inspector or insurer is most likely to mention. Fewer people can say what it actually covers, how it differs from the outdoor playground standard, or which edition applies.
This guide explains ASTM F1918 at a high level using ASTM's own published scope, shows where it sits next to related standards in the US and Canada, and lists the questions to ask before you buy. It does not reproduce the standard; buy the current edition from ASTM for exact requirements. For the trampoline equivalent, see our guide to trampoline park safety and ASTM F2970.
Key takeaways
- ASTM F1918-21 is the active edition of the soft contained play equipment standard, developed by ASTM Subcommittee F15.36.
- It covers users from the 5th percentile 2-year-old to the 95th percentile 12-year-old.
- Outdoor public playground standards in the US (ASTM F1487) and Canada (CSA Z614) exclude soft contained play equipment.
- ASTM opened a revision in April 2025 that proposes renaming the product category "contained play equipment."
- Some regulators use F1918 directly; New Jersey's type certification for soft play units references F1918-12.
What is ASTM F1918?
ASTM F1918 is the Standard Safety Performance Specification for Soft Contained Play Equipment, published by ASTM International under Committee F15 on consumer products. According to the ASTM page for F1918-21, its purpose is to reduce the potential for life-threatening and debilitating injuries, and it applies to equipment used by children from the 5th percentile 2-year-old to the 95th percentile 12-year-old.
Soft contained play equipment is the enclosed, multi-level structure most people call an indoor playground: steel frame, padded platforms, netting, slides, tubes and activity panels, with play happening inside the structure. Our three-level commercial indoor playground and two-level indoor play structure are typical examples, and Tumblewright designs them with reference to ASTM F1918.
What does F1918 cover?
F1918 is organized into topic sections that run from materials to evacuation. The table lists the section titles shown on the ASTM page and explains, in our words, what each one means when you are buying or running a structure.
| Section (as titled by ASTM) | What it means for buyers and operators |
|---|---|
| Materials and manufacture | Ask what the frame, padding, vinyl and netting are made of, and how they are joined |
| Performance requirements | The structure has to perform safely in use, not just look finished; ask how it was evaluated |
| Access/egress | Children and adults need workable ways in and out, including for rescue |
| Equipment | Slides, tubes, nets and play components inside the structure |
| Areas outside equipment | The zone around the structure, including run-outs and adjacent surfaces |
| Structural integrity | The frame and connections must carry expected loads; ask for test data or sealed calculations |
| Maintenance | The manufacturer's maintenance instructions and the operator's routine |
| Fire safety | Flame-resistance documentation for materials, which fire officials may ask to see |
| Evacuation | How staff get children out of an enclosed, multi-level structure in an emergency |
Fire safety and evacuation are worth noting because they are specific to enclosed indoor structures. A child three levels up inside a netted structure cannot be reached the way a child on an open playground can, so the evacuation plan is part of the design.
How is F1918 different from playground standards?
F1918 exists because outdoor playground standards do not cover soft contained play. The ASTM F1487 public playground specification covers the same 2-to-12 age band but explicitly excludes soft contained play equipment, along with home equipment, toys, amusement rides and equipment for children 6 to 24 months. In Canada, CSA Z614:20 covers outdoor public playgrounds for children aged 18 months to 12 years and excludes soft, contained play equipment with controlled public access, such as equipment in restaurants and department stores.
F1918 in turn excludes public and home playground equipment, sports equipment, amusement rides, fitness equipment that is not part of the play system, water attractions, and toys and juvenile products. It also does not address accessibility except for safety issues not covered by the ADA Accessibility Guidelines.
Two practical consequences follow. First, an outdoor playground certificate does not tell you anything about an indoor soft play structure. Second, Canadian buyers should not assume CSA Z614 applies indoors; ask your province or municipality which standard it expects. Components inside a structure may still borrow from playground practice, such as CPSC guidance that overhead ladders and rings are designed for ages 4 through 12, according to the CPSC Public Playground Safety Handbook.
How has ASTM F1918 changed over time?
F1918 has been revised several times since 1998, and a new revision is in progress. The ASTM page lists editions from 1998, 2004, 2010 and 2012, a 2017 reapproval of the 2012 edition, and the active 2021 edition.
In April 2025 ASTM opened work item WK94592 to revise F1918-21. It proposes changing the title, product definition and references to "contained play equipment," on the reasoning that covered equipment no longer relies on foam covered with fabric, and that the defining feature is that play happens inside the equipment. If it is adopted, expect the standard's name to change while its subject stays recognizable.
Edition matters in practice: regulators and contracts may cite an older edition. Ask your inspector and supplier which edition they are working to, and write it into your purchase agreement.
Who enforces F1918?
F1918 is a voluntary consensus standard, so it becomes binding only when a regulator, contract or insurer adopts it. Practice varies widely by state and use.
- New Jersey. The Department of Community Affairs, which oversees amusement rides, uses a type certification application for soft play units that references ASTM F1918-12. Manufacturers submit a maintenance, operation and assembly manual, flame-resistance documentation, a structural integrity test or engineer-sealed calculations, a quality assurance manual and a statement of compliance. The form lists a $280 application fee and a $280 engineering review fee.
- Texas child care. Licensed child-care centers with soft contained play equipment must follow 26 Tex. Admin. Code 746.4953, which limits the height difference between connecting platforms to 24 inches, requires use zones clear of obstacles and covered with unitary surfacing, and requires at least one caregiver at each level while the equipment is in use.
- Insurers and landlords. Leases and insurance policies may ask for evidence that equipment was designed to recognized standards. Check the exact wording with your broker.
Other states and municipalities may regulate soft play through amusement, building, fire or child-care codes, or not at all. Check with your local authority before you order.
What to ask a manufacturer about ASTM F1918
The useful question is not "is it F1918 certified?" but "what documents back up the design?" Ask any supplier, including us, for:
- The edition of F1918 the design references.
- Layout drawings showing levels, access points, slides, run-outs and areas outside the structure.
- Material specifications for steel, padding, vinyl and netting, and flame-resistance documentation for the materials.
- Structural information your engineer or regulator can review.
- Assembly, operation and maintenance instructions, plus a spare parts list.
- An evacuation approach for the upper levels.
Our checklist on choosing an indoor playground manufacturer goes deeper on documentation. After installation, the operator's job begins: follow the maintenance instructions, run daily checks with our indoor playground safety checklist, keep a cleaning routine as in our guide to cleaning soft play equipment, and rehearse evacuation with staff. For under-3s, see our toddler soft play design rules and the toddler soft play range.
Planning a soft contained play structure? Send your floor plan and ceiling height, and we will draw a layout designed with reference to ASTM F1918 and quote it. Request a layout and quote, or browse our indoor playground structures.
Frequently asked questions
Is ASTM F1918 mandatory?
Not by itself. ASTM F1918 is a voluntary standard that becomes binding when a regulator, contract or insurer adopts it. New Jersey, for example, references it in type certification for soft play units. Check with your state and local authority.
What is the current edition of ASTM F1918?
ASTM lists F1918-21 as the active edition. A revision opened in April 2025 (work item WK94592) proposes renaming the category "contained play equipment." Regulators may still cite older editions such as F1918-12.
What age range does ASTM F1918 cover?
It covers users from the 5th percentile 2-year-old to the 95th percentile 12-year-old. For children under 2, plan a separate toddler area designed for that age group.
Does ASTM F1487 apply to indoor playgrounds?
ASTM F1487 covers public playground equipment and explicitly excludes soft contained play equipment, which is covered by F1918. In Canada, CSA Z614 likewise excludes soft contained play with controlled public access.
Can a manufacturer certify my playground to F1918?
A manufacturer can design to F1918 and supply documentation. Whether your installed site complies is decided by your inspector and local authority, so ask suppliers for documents rather than relying on a certificate claim.
Sources
- ASTM F1918-21, Standard Safety Performance Specification for Soft Contained Play Equipment, ASTM International, accessed October 2026.
- WK94592, Revision of F1918-21 Standard Safety Performance Specification for Soft Contained Play Equipment, ASTM International, accessed October 2026.
- ASTM F1487, Standard Consumer Safety Performance Specification for Playground Equipment for Public Use, ASTM International, accessed October 2026.
- CSA Z614:20, Children's playground equipment and surfacing, CSA Group, accessed October 2026.
- Application for Type Certification, Soft Play Units, New Jersey Department of Community Affairs, accessed October 2026.
- 26 Tex. Admin. Code 746.4953, Additional safety requirements for soft contained play equipment, Cornell Legal Information Institute, accessed October 2026.
- Public Playground Safety Handbook (Publication 325), U.S. Consumer Product Safety Commission, accessed October 2026.
