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Some Basic Questions We Ask When Building A Foundation On Rock. 

So you want to build your custom dream home or cottage on rock. Fantastic. No problem. Royal Homes can get the job of putting a solid foundation on rock done perfectly. But it all starts with a simple, basic question. How level is the existing rock? The answer determines how we proceed.

“Can they actually build over the existing rock?” Tony Bokkers, Royal Homes senior site manager helps explain. “We can build the foundation almost anywhere on the property. If the site terrain is sloped and they still want to build on the location to maintain the vista, we might possibly have to do some blasting. That’s determined by the size of the house and where they want the house located.”

It Can Be A Blast!

The first thing we have to do is excavate the organic overburden materials in the area of the rock to expose the hollows. Then we can verify, based on site conditions, the extent of work required to blast the rock so it’s level.

We often blast the rock plus-or-minus two feet around the footings. Blasting calls for a drill rig on site. A series of holes will be drilled in the rock a few metres apart. The holes are loaded with dynamite and the whole area is covered with a blasting mat. After blasting, the shattered rock must be excavated out.

If suitable, the blast rock is used to level out the building envelope. With the guidance of an on-site engineer, the compaction of the rock is determined. Next, we install crushed stone to bring the grade up to level of the underside of the footings. This crushed stone is used to fill voids in the blast rock during placement and compaction.

And that’s just one scenario.

On The Rocks

In another case, exposing the rock may show us that blasting is not required. Then, it’s a matter of determining the position of the house and where footings will go.

The next step is to pin the footings by drilling into the rock and install rebar epoxyed in place to prevent the footings from slipping. Footings are poured with forming up over the rock, approved by an engineer or perhaps a building inspector. After the walls are poured, we infill everything on the inside under a concrete slab for a level basement.

Where There Is A Will There Is A Way

“There are a couple of different ways of doing it, depending on the situation,” Bokkers says. There can be instances where you are digging on-site and you find there is a nugget of rock that comes up above the established footing elevation or the basement level. In this case, there are a few possible solutions…

One option is to not go down as deep with the foundation footings. This way, fill can be imported to grade things out. Another option is called chemical blasting. Holes are drilled into the rock and a two-part epoxy-type mixture is poured into the holes. Overnight, the product expands and pops the rock into pieces which can be moved with an excavator.

“We can do anything,” Bokkers said. “Just tell us what you want to do.”

If you would like to learn more about Royal Homes and our innovative process, please don’t hesitate to contact us. Let’s talk!

The passion and attention to detail that the Royal Homes team has is incredible. Their pre-fab homes and cottages and have never been anything short of stunning and top quality. I would recommend this company in an instant, without a shadow of a doubt.Jessica
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  • FAQ

    Where can I get a price list or How come your website doesn’t show pricing?

    Prices vary geographically, depending on where you are building. With the amount of options available, price lists run into thousands of options. Prices change with the options you choose. The best way to get an idea on pricing would be to contact our Design Centre nearest to where you are building.

    Why should I buy from you over a conventional or "Stick-Builder"?

    The advantages of prefab include building in a climate controlled environment, using environmentally friendly products which reduces waste and a CSA monitored quality controlled program. There is less time start to finish, with less disruption to neighborhood. We also sell at a firm price.

    Do your homes include a foundation?

    Yes our homes include full foundation and basement.

    How long does it take to build a Royal Home?

    It takes less than two weeks to build a home in our factory, but the process from start to finish is very dependent on the timing of obtaining a building permit. For most of our clients the process from start to delivery is twelve to sixteen weeks with move in eight to twelve weeks thereafter.

    What size homes do you build?

    As a custom builder we can build any size home but generally the average size range is between 1300 and 3500 sq feet.

    Do you build garages?

    Yes. Garages are built on site after the home is delivered.

    Are the homes energy efficient?

    Building a prefab home in a factory assures the highest attention to sealing the building envelope and ensures that the cold stays out.

    Since your homes are so energy efficient and air tight, how do you get fresh air?

    All our homes have HRV heat recovery ventilator air exchanger to remove stale air, and introduce fresh air.

    Where can I put a prefab home?

    Anywhere in Ontario you like.

    Can I really customize my prefab home?

    Yes, we use state of the art custom design software, today no two homes are built alike.

    Do you finish the basement?

    Yes. We can customize your basement to the finishes you desire.

    Are Royal Homes built to code?

    All Royal Homes are individually designed to meet all provincial and municipal building codes for your specific lot location.

    Do you build stick-built or conventional homes as well?

    We are a custom home builder first and use prefabricated components wherever we can, because it is a better way to build. If you have a remote site or custom home design with large open spaces we would look at what makes most sense for that design and location. This could include prebuilt panels or partially site built specific rooms.

    What makes the building process environmentally friendly?

    Waste in the factory is separated and recycled, reducing the impact on landfills. This has less disruption in terms of noise and time at job site. Building prefab allows for higher energy efficient homes and reduced heating costs.

    How is your home delivered?

    Our home is delivered by way of custom designed hydraulic flatbed trailers and precisely craned onto the foundation.

    Can you make changes or custom design?

    Yes, clients are given preliminary plans to review and changes are welcome and easily accommodated.