This weighted anchor doesn’t require drilling into your roof, therefore preventing damage and maintaining your roof warranty.

Code Expertise

OSHA Compliant

OSHA compliant roof anchor for one worker in fall arrest or two workers in fall restraint.


Durable, Long-lasting

Weightanka is designed to last years. Corrosion resistance adds longevity, even in harsh environments.


Easy Assembly

No special training or permits to worry about. No threading, no welding, and no drilling. Only an allen wrench is required.

Advantages of Weightanka's
Non-Penetrating Anchor System

non-penetrating roof anchor

Supports Multiple Workers

One Weightanka system can support one worker in fall arrest or two workers in fall restraint*. The weighted anchor system is modular so that it can be reconfigured to be used with one person or two people. Weightanka keeps your workers protected for short-term maintenance operations such as work with AC units, telecommunications equipment, etc.

The system has been designed to be used with an approved shock-absorbing rope grab and rope along with a full body harness to provide safe access at all times. No part of the Weightanka should be placed closer than 10 ft from the nearest roof edge.

*A fall restraint system will eliminate the possibility of an employee going over the edge of a walking-working surface.

Avoid Costly Damage to Your Roof

The anchor system's non-penetrating design prevents leaks, pooling water, and other potentially expensive roof damage. It doesn't require any structural or engineering attachment, making it a non-invasive roof anchor. The rubber coating encases each base weight with 100 suction cups to maximize grip with the roof membrane.

weighted rooftop anchor
weighted anchor point

Durable Components to Last Years

The freestanding rooftop anchor uses industrial strength components to ensure durability. Predominantly made of galvanized steel, the structure is designed to be left on the roof permanently, even in harsh weather conditions*.

As with any fall protection solution, just ensure that the roof anchor system is inspected periodically so that you can safely use Weightanka for years to come.

*Weightanka can be left in harsh conditions, but should not be actively used in harsh conditions. Standing water and ice will eliminate the friction required.

Easy to Assemble with Simple Tools

Installation is quick and easy! An allen key and tommy bar are the only tools needed - and are included in the kit. No special tools or labor are needed. There is no welding, bending, or threading on site.

The system is also easy to deconstruct and reinstall if needed. A single standard weight is made of galvanized steel and weighs 55 lbs, which makes it possible for the entire structure to be moved around as required.

It is really convenient knowing that we always have a non-penetrating anchor point system ready to be used in the field that can be assembled and disassembled by our own guys, quickly, with minimal maintenance and transportation requirements.
- Sam, Newport Industries

Technical Details

  • Dimensions: 4'-6" x 4'-6"
  • To be installed no closer than 10' from an edge
  • Can be used on roofs with up to a 5-degree pitch
  • Designed to be used with shock absorbing lanyards that have a 900lb maximum arresting force
  • COSHA, Military Code - EM 385 -1, and ASSE z359.1 compliant
  • Galvanized to BS EN ISO 1461
  • Over 100 suction cups molded into each rubber bonded weight to maximize grip
  • Fall Restraint application, a maximum of two users may be connected to the system where no user is able to reach a position of 20 inches from the roof edge.
  • Raised central pedestal reduces the distance of travel during a fall arrest event
Deadweight Roof Anchor System

Examples of Weightanka

Weightanka FAQs

What is the weight of a fully assembled Weightanka system?

A fully assembled standard Weightanka system weighs around 660 lbs.

What is the weight of the heaviest component?

The heaviest Weightanka components are the freestanding standard weights. Each standard weight is around 55 lbs.

Can Weightanka be left permanently on the roof?

Yes. The roof anchor system can be used as both a permanent or temporary fall protection system.

What is the lifespan of a Weightanka system?

The system can last several years with appropriate maintenance. If, for any reason, one of the components gets damaged and needs replacing, the component can be replaced without the need to replace the entire system. This makes Weightanka cost-effective.

What types of roofs can Weightanka be installed on?

Weightanka is suited for flat roofs (with up to a 5-degree pitch). It is suitable for the following types: asphalt, mineral felt, profiled metal sheets, stone chippings, single ply membrane, and concrete. If your roof is made of a different material, please get in touch with our team and we will advise you on its suitability for your particular layout.

What PPE do I need with Weightanka?

The Weightanka has been designed to be used with an approved shock-absorbing rope grab and rope along with a full-body harness to provide safe access at all times. The manufacturer of the chosen PPE must affirm that it can be used in the horizontal configuration and over the edge of any potential drop.

How many people can use Weightanka at the same time?

Weightanka is designed for use by 1 person (in either fall arrest or restraint), but can be configured to allow for 2 people (both in fall restraint). Kee Safety recommends that, as far as reasonably practicable, the Weightanka® should be used as a fall restraint solution rather than fall arrest.

What standards is Weightanka compliant with?

The system meets the following standards and regulations: Class E of BS EN 795, BS7883, Construction (Design & Management) Regulations, Work at Height Regulations, Construction (Health, Safety & Welfare) Regulations, Workplace (Health, Safety & Welfare) Regulations, Manual Handling Operations Regulations. COSHA, Military Code - EM 385 -1, and ASSE z359.1 compliant. Galvanized to BS EN ISO 1461.

Can Weightanka be used in all weather?

The Weightanka system may only be used when the supporting base is free from standing water, snow, and ice. Do not use if there is the risk of frost or freezing conditions. Standing water and ice will eliminate the friction required.

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Michael Hannah
Fall Protection Specialist
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Michael Hannah
Fall Protection Specialist
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