GENERAL Frequently Asked Questions

Still have a question about one of our products? View all frequently asked questions here and find out if your question may have already been answered.

What is the delivery time?

Delivery time averages 5 business days.

How will it be shipped?

The technician will come and assemble the sofa on site (±30m) or your furniture will come pre-assembled with a transport company

What does it cost to change the size?

Our process is designed so that any size is possible at no additional cost.

Do I have a warranty?

We provide a 2-year warranty on the concrete, provided under normal use

How should I maintain the concrete elements?

The concrete elements can be easily cleaned with warm water and soap. Otherwise, you do not need to do anything with them. If you want the color to be more intense, we recommend treating the elements with a colorless concrete fixative. This also prevents discoloration caused by weather conditions.

Where is it made?

We produce all parts in a social workshop in Amsterdam. Here people "work" who, against their will, are often temporarily out of a job. They develop new skills and get back into a work rhythm. Over time, most of them move into paid employment.

How thick are the boards?

The boards we offer in hardwood, Douglas fir and spruce are 3 to 3.5 inches thick and 19 to 20 inches wide.

How big can I get my engraving on the boards?

The engraving can be as large as you wish; it can even be on the boards in the seat. Please note that the engraving creates a minimal deepening in the wood, which again can more easily hold water.

What about C02 emissions from concrete?

Concrete is known to be a huge burden on the environment. Especially the burning of the cement clinker consumes a lot of energy. Yet this is not so bad when compared to its lifespan. Concrete elements theoretically have an eternal lifespan. In fact, concrete only gets stronger as the years pass. Fortunately, we use residual concrete and do not create more emissions, but rather less residual product!

I have some shelves of my own; can I buy individual elements?

Yes, you can buy separate concrete elements and, if necessary, brackets for a backrest. Mounting materials are included as well as an instruction manual to assist you. All you need is a drill 6, wrench 13, a square and a folding ruler.

Can I (have) the benches painted?

Sure! You can paint, stain or oil the boards in any color you want. If you would like us to do this, please allow for longer delivery time and additional costs.

What is the average lifespan?

The concrete can last a lifetime. The wood probably won't. Spruce has a lifespan of 5 to 10 years, depending on weather conditions, treatment and ventilation. With Douglas fir it is 10 to 15 years and with hardwood it is 15 to 25 years.

What is the average lifespan?

Concrete can last a lifetime. Wood has a slightly shorter lifespan but can still last for years. Spruce wood has a lifespan of 5 to 10 years, depending on weather conditions, treatment and ventilation. For Douglas fir wood, it is 10 to 15 years and for hardwood, it is 15 to 25 years.

Are the concrete elements on the ground?

All concrete elements have 10mm rubber pads at the bottom. So your furniture stands better and does not damage the terrace.

How should I maintain the wood?

The maintenance of the planks depends on taste; if you do nothing to the wood, it will gray under the influence of weather conditions. Many people find this beautiful. For longevity, it is important to keep the boards free of moss and algae. It helps to lightly sand the boards every spring to keep algae and moss at bay.
If you want to prevent graying, there are a variety of varnishes and oils. If you want to preserve the natural color, we recommend the bangkirai or garden wood oil from Remmers for hardwood. For douglas and spruce we recommend Remmers Aqua HSL/35/m.
Sand lightly every spring and apply with roller.

Who does the design come from?

The design is entirely in-house.

Can I paint the concrete elements?

You can paint the concrete elements with concrete paint.

How will the furniture get on my roof terrace?

All Rock Products products are modular. They consist, as it were, of building blocks. The components are small to transport and can therefore be taken by stairs or elevator to the desired location. There we complete the furniture.

I am handy; can I buy individual parts?

Yes you can; you can buy the sofa in separate parts. We will provide you with an instruction manual to assist you. All you need is a drill bit 6, wrench 13, a store hook and a folding ruler.

Frequently asked questions planter

Still have a question about our planter? View all frequently asked questions here and find out if your question may have already been answered.

What are the inside dimensions of the planter?

The inner size is about 10cm smaller than the inner size.

Is the planter on legs or the ground?

The concrete corners of the planter are on the ground. The rest float about 5cm above the ground.

Can the planter be made mobile?

Yes, substantial wheels can be mounted under the planter.

Can the planter serve as a border planter?

Yes, if the concrete corners are placed deeper in the ground, the border can be made at the desired height.

Frequently Asked Questions BENCH

Still have a question about our bench? View all frequently asked questions here and find out if your question may have already been answered.

How high is the sofa with backrest?

87 centimeters

How deep is the bench?

94 centimeters

How high is the bench without a handrail?

46 centimeters

What is the seat height of the C3bench?

40 centimeters

What does such a couch actually weigh?

The concrete elements weigh over 50kg each.
For a 2 meter bench with backrest you can consider about 150kg

Do you also have a corner sofa?

We also make corner sofas, even at any angle. And of course made to measure; ask for a quote without obligation.

What is the maximum width of a sofa?

There is no limit to the desired width. The wood we use is usually not much longer than 5 meters. If you want a longer bench that 5 meters we extend the boards invisibly into the concrete legs. Every 2 meters an intermediate leg will have to be used. In the backrest, unfortunately we cannot do the lengthening of the planks invisibly.

Can I fix the bench in the ground?

In the bottom of all concrete elements there is a provision to screw in a long threaded rod. You can countersink this threaded rod into the ground so the furniture will definitely stay where you want it to!

Frequently asked questions lounger

Still have a question about our lounger? View all frequently asked questions here and find out if your question may have already been answered.

What is the seat height of the C3lounger?

The seat height of the C3lounger is 30 centimeters. The lounge sofa is often used in combination with lounge cushions.

Do you have another question?

We are happy to help you. You can always contact us without obligation.

Do you have a question about one of our products? Feel free to contact us and we will be happy to help you. You can reach us by calling +31624777564 or sending an email to info@rockproducts.nl. We will get back to you as soon as possible.

"We work every day to make the product and process and the people behind it a little better."
Peter Schellekens

Our products

Planters, table or lounge bench? Check out the different products we can all make for you. All products are specially made to measure.

Garden bench

A robust and unique garden bench with an active seating position

Lounger

A lovely robust lounge sofa that provides a relaxed seating position

Garden Table

Both functional and a real eye-catcher with unique design

Planter

A unique planter that completes your garden
Do you want custom-made garden furniture at no extra cost?

Request a free quote and we will discuss all your needs together