Blocking up a park model trailer involves strategically placing concrete blocks or other durable materials beneath the frame to provide stable, level support, ensuring the unit is safe, prevents structural damage, and provides comfortable living conditions. It’s more than just plopping down a few blocks; it’s a critical step in ensuring the longevity and livability of your park model.
Why Blocking Up Your Park Model Matters
A park model trailer, while often appearing more permanent than a traditional travel trailer, still relies on a properly supported frame. Over time, without adequate blocking, the frame can sag, leading to uneven floors, sticking doors and windows, and potential damage to plumbing and electrical systems. Think of it as laying a solid foundation for your mobile home. Proper blocking is crucial for several reasons:
- Stability and Levelness: Blocking ensures the park model is level, preventing uncomfortable sloping floors and ensuring doors and windows function correctly.
- Weight Distribution: It evenly distributes the weight of the structure, preventing stress on specific points of the frame.
- Protection Against Sagging: Without proper support, the frame can sag over time, causing costly structural damage.
- Compliance with Local Codes: Many park model communities require blocking for safety and aesthetic reasons.
- Protection against the Elements: It provides a barrier against moisture and pests.
The Blocking Up Process: A Step-by-Step Guide
Before you even think about touching a block, you need to prepare the site. A poorly prepared site is almost as bad as no blocking at all.
1. Site Preparation: Leveling the Ground
The foundation for your blocks starts with the ground. Using a shovel and a level, prepare the ground where each block will be placed. This is not optional; a level base is critical for stability. The goal is to create a flat, compact surface. Consider using gravel or compacted soil to provide a stable base. You can use a laser level to check the levelness of the ground and ensure the trailer is properly aligned.
2. Choosing the Right Materials
Not all blocks are created equal. Concrete blocks are the most common and recommended material for blocking up a park model. They are durable, readily available, and relatively inexpensive. Ensure you use solid concrete blocks, not hollow ones, as they offer greater strength and stability. You can also use specialized trailer blocks designed for this purpose. Avoid using wood, as it will rot and decay over time. The quantity of blocks you’ll need depends on the size and weight of your park model, as well as the number of support points required.
3. Determining Support Points
Consult your park model’s manual for recommended support points. If the manual is unavailable, a general rule of thumb is to place supports every 8-10 feet along the frame. Pay particular attention to areas with heavy appliances, such as refrigerators and washing machines, and areas prone to sagging. Support should be concentrated under the frame’s main I-beams.
4. Placing the Blocks: A Safe and Secure Method
Safety is paramount. Use a hydraulic jack rated for the weight of your park model to lift the frame at each support point. Place the blocks directly beneath the frame, ensuring they are centered on the ground preparation. Always use shims between the blocks and the frame to ensure a snug fit and to compensate for any minor irregularities. Never work under the trailer without proper support. Once the trailer is properly positioned on the blocking, remove the jack slowly.
5. Leveling the Park Model
Use a level to check the levelness of the floors, walls, and ceiling. Adjust the shims as needed to achieve a perfectly level surface. This may require lifting the trailer slightly with the jack and adding or removing shims. This step may take several attempts to get perfectly correct, but it’s the most important step to complete.
6. Securing the Blocks
Once the park model is level, you may want to further secure the blocks to prevent them from shifting. This can be done by using mortar to cement the blocks together or by using metal straps to secure the blocks to the frame. This is important if you live in an area prone to seismic activity or high winds.
7. Regular Inspection and Maintenance
Blocking is not a one-time task. Inspect the blocking regularly for signs of shifting, cracking, or settling. Make adjustments as needed to maintain the levelness and stability of the park model. Ideally, you should perform an inspection after each significant weather event.
Frequently Asked Questions (FAQs)
Here are some frequently asked questions to further clarify the process and address common concerns:
FAQ 1: Can I use wood instead of concrete blocks?
No. While wood might seem like a cheaper and easier option, it’s not suitable for long-term blocking. Wood is susceptible to rot, insect damage, and compression, which can lead to instability and structural problems. Concrete blocks are far more durable and reliable.
FAQ 2: How many blocks do I need?
The number of blocks depends on the size and weight of your park model. As a general rule, you’ll need enough blocks to support the frame every 8-10 feet. Consult your park model’s manual or a professional for specific recommendations. Consider the weight distribution and areas with heavy appliances.
FAQ 3: What type of jack should I use?
A hydraulic jack rated for the weight of your park model is essential. Never use a scissor jack or a bumper jack, as they are not designed for this type of lifting and can be dangerous. Consider using bottle jacks or floor jacks, ensuring they have a sufficient weight capacity.
FAQ 4: How do I level the ground if it’s uneven?
Use a shovel to remove high spots and fill in low spots. Compact the soil using a tamper or plate compactor to create a solid, level base. Consider using gravel or crushed stone for added stability and drainage.
FAQ 5: What are shims and why are they important?
Shims are thin pieces of wood or plastic used to fill gaps between the blocks and the frame. They ensure a snug fit and compensate for minor irregularities. Shims help distribute the weight evenly and prevent the frame from resting directly on the blocks, which can cause damage.
FAQ 6: Is it safe to work under the park model while blocking?
Absolutely not, unless it is properly supported. Never work under the park model without proper support from the jack and blocking. Ensure the blocks are securely in place before venturing underneath. Safety is paramount!
FAQ 7: How often should I inspect the blocking?
Inspect the blocking at least twice a year, and after any significant weather events such as heavy rains or storms. Look for signs of shifting, cracking, or settling. Make adjustments as needed to maintain the levelness and stability of the park model.
FAQ 8: Can I hire someone to block up my park model?
Yes! If you’re not comfortable doing it yourself, it’s best to hire a professional. Look for mobile home leveling or foundation specialists in your area. They have the experience and equipment to do the job safely and correctly.
FAQ 9: What happens if I don’t block up my park model properly?
Improper blocking can lead to a host of problems, including sagging floors, sticking doors and windows, damage to plumbing and electrical systems, and even structural damage to the frame. These issues can be costly to repair and can significantly reduce the lifespan of your park model.
FAQ 10: What is the best material for shims?
Wood shims are commonly used, but plastic shims are more durable and resistant to moisture. Choose a material that is strong and won’t compress over time. You can also purchase specialized shims designed for mobile home leveling.
FAQ 11: Do I need to anchor my park model after blocking it?
Anchoring is recommended, especially in areas prone to high winds or seismic activity. Anchors help prevent the park model from shifting or overturning. Consult your local building codes or a professional installer for guidance on anchoring requirements.
FAQ 12: Will blocking up my park model affect my warranty?
It depends on the terms of your warranty. Some warranties may require specific blocking procedures to be followed. Check your warranty documentation or contact the manufacturer for clarification. Improper blocking could potentially void your warranty.
Conclusion: Invest in Stability
Blocking up your park model trailer is an investment in its longevity, safety, and comfort. By following these steps and addressing common concerns, you can ensure your home is stable, level, and protected for years to come. Remember, proper preparation, the right materials, and careful execution are key to a successful blocking project. If in doubt, always consult a professional.